Malicious PDF — malware analysis report

Static analysis result for SHA-256 867c59bee8eada28…

MALICIOUS

PDF

95.3 KB Created: 2021-08-11 05:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: e82a3435c671442d67a2eb180f203e7e SHA-1: 5f22b2cfd92bcdbba50ffeda1f147dda093a752c SHA-256: 867c59bee8eada28f518a840240ab15466be400e4116d67e431e3b942f3f47a4
156 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and compromised CMS upload links further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9673

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://pistant.ru/uplcv?utm_term=the+necklace+story+summary+in+hindi PDF link annotation
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd7950b77c---22026328800.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/24179720684.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073165965809---98125814863.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/5u7jcv6f7vtlttcukjd1tkb5su/16811169901.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/hb10irovsp7m6g85pvo3ok414v/morexunipegumomivirofotu.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/13326635485.pdfIn PDF document text
    • http://p-energo.ru/content/file/18998244955.pdfIn PDF document text
    • https://zold-kommando.hu/files/maditexupuxuxen.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/c491dsmk7g33p1j0um22gv1o92/89494698810.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/8cd90c8cb9247fbeca1a0235357a2c79/binokafawitotosikiga.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/43951463816.pdfIn PDF document text
    • http://sieuthibds.net/images/files/95847174361.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/28542099f95c10156661793900ef7d9f/woxebobelobaner.pdfIn PDF document text
    • http://industrialsupplies.pk/userfiles/files/jaxusagogifusoxatizeme.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/86645247733.pdfIn PDF document text
    • http://nhactheducthammy.com/upload/files/7998767413.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/34564479686.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1d09fdae25c597f25a52ac5d2e67802a/9461323652.pdfIn PDF document text
    • http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/36555876579.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094984bb136b---tagapajusat.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c22ed0c30---51474438313.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcec7cbbf1---mugewaserokikijag.pdfIn PDF document text
    • http://chongros.com/userData/board/file/virezikexugog.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/32134714335.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160763893d86e9---seditarejamifudir.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/e0895a598b3247b32eac9e364e3dc24a/goxogulumegokaxodepededol.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/82118726904.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e4b033918---motolinilikenaguran.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10338 2372 bytes
SHA-256: 00eb975dcffe434aaeba46b7235ded4e908230d109feb8fdbe236371db421cd0
font_01_sfnt_off00010d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5A 10904 bytes
SHA-256: 9d43cae117e927429cd9f2ed56da355a5d33987b85833774b54fbedabb8af193
font_02_sfnt_off00012673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12673 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E85 17928 bytes
SHA-256: 3e821c3815eaf09456406051884188ba1efd2816cca4dcf9a4aed40f214e67d8

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