Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d262341ed0f0c1…

MALICIOUS

PDF

150.7 KB Created: 2021-07-01 13:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 429e0d0a80479d05b8848b41116fd619 SHA-1: b93d905c5a3bceb4f2dc19421c2f21a3d811a46e SHA-256: 61d262341ed0f0c13bffa88166f0b751f9f7ae88e68c2b645f11d6fd2dd26434
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure suggests exploitation of PDF vulnerabilities or social engineering via linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9433

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://allprintusa.com/admin/images/file/kenomezu.pdf In PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/5f2b6bcf1452df81192301051d35f695/94584895544.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d77c5143a8---sezikususapezukeweriv.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db087737579---zetadavobogajuxemeweno.pdfIn PDF document text
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/60112dcb12065079986934e898d140c3/zaxasixenos.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/xisego.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/86343970978.pdfIn PDF document text
    • https://areicon.com/images/file/kuresudixobev.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/04ff94f364d136a33c51f2cd17ebe334/29366134647.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/vofozo.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/7c7830c5413bf494b8295cdbd32f327e/xarasunojosudi.pdfIn PDF document text
    • https://aldwalia.com/userfiles/files/26006859626.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160728d1593912---ratedadu.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210507122338164.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/27sndukhnm6rv1f6ddj2tb2fje/megadezalawulujagi.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ad81ca43e5e---20386642866.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///guxedevapijanesufajulif.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926de10ded8---sovafizin.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160873fa9b1bdf---samogasowok.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/1de51f3b030e5ece1a728d681b5f1fe0/73952427324.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/5jm5ceirsp6brhuvbj1iit1ts3/81796164197.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b678a678d27---kovimujadovevotodipix.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/1cf9a4d8e6761a71050fe2730287f595/rineg.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160844f1706703---noxagizejebedifozajituxa.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d07698385e862c959be29d7f489dde6f/28124156807.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=sears+tower+observation+deckPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF422 10776 bytes
SHA-256: 8c0df50bd7490c2c18afa19c2e07bf8a0435130e22454f0e361431bb83005e47
font_01_sfnt_off00010d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1A 18372 bytes
SHA-256: 8bc963b8080d12f59457e7d80d633d1478e3087511480f5e6b205a13c9bdef5b
font_02_sfnt_off00013d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D90 18500 bytes
SHA-256: 198385969ceaef4112e8628e4e84f1e7e2c65fa41e26e790b7de49fc962cd11a
font_03_sfnt_off000158cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off000170d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170D9 86836 bytes
SHA-256: 4c54093820440516c94b060c666f2634a6105db898806b51747c84c04dc1e098

Open this report in the interactive analyzer, or submit your own file for analysis.