Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bdf66d5ae93641…

MALICIOUS

PDF

84.7 KB Created: 2021-08-11 11:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 1d78ce43580a2616bb2a7f5e3b015d7f SHA-1: 4b006643cb48f2f6bb203ca9066a341cb867d65d SHA-256: 32bdf66d5ae936416b55e6b6ed35dc03e4323b70a5cb7d373dc544631f9c21b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://barcabianca.eu/upload/file/wijizodex.pdf In PDF document text
    • https://alev.az/userfiles/file/bulodobiselofor.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d8e721a875f---xakolukebobikadusemiriv.pdfIn PDF document text
    • https://areicon.com/images/file/zeselomafidibajarubib.pdfIn PDF document text
    • http://colorfusion.us/admin/images/file/26591875759.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607433d20e871---tosodaxo.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/xevonovut.pdfIn PDF document text
    • http://www.mediagrand.hu//data/editorfile/vefedasonedakilixevudeviw.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160e9106432361---13028344692.pdfIn PDF document text
    • https://jagamimpi.com/contents//files/pipodinusuruxunapixafefup.pdfIn PDF document text
    • http://livingkaneohe.com/userimages/devisuruginosixifatu.pdfIn PDF document text
    • http://backkwang.com/userData/board/file/bawalesaxuxamelegopagabu.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/wadurobesukazedaxe.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/dad422df30963103cd1c60bae151aabe/novutejetugigot.pdfIn PDF document text
    • http://womensmentalhealthmd.com/clients/9/9a/9a9ccad1be43d50cbc9928f06550b956/File/91360570798.pdfIn PDF document text
    • http://www.bandungmesin.com/file/82701062355.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/3f4e6656691b5d98f0ab13917875bbee/manaxeduzijuku.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/0af16b32ed1068bedda42f36a39bfd64/1410319094.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/wepeganinugidofidalix.pdfIn PDF document text
    • http://congtrinhnhaviet.vn/upload/files/zevotokusakabobokosomaj.pdfIn PDF document text
    • http://1night2daytour.com/ckupload/files/xuxifivupolobagutepen.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/e0d71231f90cc3080be8b8205bb8458c/54125857867.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/f52f1de56fe4ad80359b484caddbfbbd/kesar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=mcat+examkrackers+study+schedulePDF 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

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_off0000e28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28B 10720 bytes
SHA-256: 072ca4259942c994d76aab56a03a7e9a936afb3cdf24d5decf14c9f51a0fae36
font_01_sfnt_off0000fb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11353 17912 bytes
SHA-256: ce4e135bc18a497447794f518f2a2a5cfe16b18f1090d12df3a3a049729a6389

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