Malicious PDF — malware analysis report

Static analysis result for SHA-256 e60473e96c1cf4c1…

MALICIOUS

PDF

94.8 KB Created: 2021-07-13 16:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 080de56e1bdd7981693f57e75edcdfa6 SHA-1: 7a9492d2ec31c6a8ce02ce510c6ab5db59f0065e SHA-256: e60473e96c1cf4c102e28e0c57c74d08de4b40ad27a658f05d48ad727ddebc26
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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 https://coretry.ru/uplcv?utm_term=aggregate+payment+meaning PDF link annotation
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/n59hnonig40p4mg4m0tnhmtlm4/ximodev.pdfIn PDF document text
    • http://eurogeographyjournal.eu/admin/fckfiles/file/dunamumepoxesa.pdfIn PDF document text
    • http://thanhlapcongtykiengiang.com/upload/ck/files/luruxawi.pdfIn PDF document text
    • https://rajakeempat.com/contents//files/rusinewipuzibevukawazom.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/48ff2aac4f8b27060f9088de352a5755/dusoxasatavuwatedite.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/36667872693.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/74128699974.pdfIn PDF document text
    • http://orrizon.ru/images/file/fekuzorexawupipilus.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3831ef5f0---14155479096.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/xeradaduretupapov.pdfIn PDF document text
    • http://ddaengshop.com/ckupload/files/50001915555.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/cb79ffb5bb04219b3ead69d09306938f/botosu.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/domefo.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a4572f003---29839058332.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085dacd7fd10---karetowajudegalilejenut.pdfIn PDF document text
    • https://drivetripper.com/userfiles2020/files/pinobixev.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/78ed2eee7f3b5623bbb968f6a819f960/bifexetan.pdfIn PDF document text
    • http://be-now.pl/userfiles/file/tasavilivopolorosudud.pdfIn PDF document text
    • http://lobanowscy.pl/userfiles/file/wivegaxituvagidejinona.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/npt983ljhr2ocqqd3odjtj1q86/bumupevelesigodejasepafo.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/5e9b286d6d8e4a85c12ad2308bc672bf/60955456417.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f166564e99---tibikomekuriritorozo.pdfIn PDF document text
    • http://benjamin1908.com/clients/f/f4/f4560e3fe432b95d15e234f900dec36a/File/8180352623.pdfIn PDF document text
    • http://apvn.info/userfiles/file/62939693712.pdfIn PDF document text
    • http://jamessham.com/admin/usercontent/file/49266009850.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F99 17656 bytes
SHA-256: 47ac90eb6f4af724d0cc6137ac648acb6f72a8de01de199f2001e6285185cc1c
font_01_sfnt_off00013e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E6D 10356 bytes
SHA-256: 6e8701da397352980a20cb91f8fdebd853c07d0f070afb33610c3463605bf47f
font_02_sfnt_off000155cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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