Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f13501c704a7cf…

MALICIOUS

PDF

94.2 KB Created: 2021-09-05 21:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ea5a8ab86f4a6df8f96ada2fd41b43b8 SHA-1: 8c725176f2fa75eb5501d6b78208cdd267db0536 SHA-256: 67f13501c704a7cff7dd19eb26aefd20e5f02fefdce2d75a52b5afc04346ecab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous links to external websites, many hosted on compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics indicate the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://pixomot.ru/uplcv?utm_term=agilent+tapestation+rna+manual PDF link annotation
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/htvuf0g8lkqkhtv9c0k2dg5tt1/poremolofumut.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b4991ebbb03---46844948685.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/xumes.pdfIn PDF document text
    • http://czytamzezrozumieniem.pl/userfiles/file/rexum.pdfIn PDF document text
    • http://kondicionery-domodedovo.ru/upload_picture/file/84328526137.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210602174711.pdfIn PDF document text
    • http://karpatskiles.ru/store/files/wujonadaxavuwimipoxado.pdfIn PDF document text
    • https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/98565900427.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/wedejupisepevuvubag.pdfIn PDF document text
    • http://tractortools.cz/ckfinder/userfiles/files/70783670211.pdfIn PDF document text
    • http://teechart.com/uploads/images/files/mozoxifekemezus.pdfIn PDF document text
    • http://tks-forever.com/upload/2021/07/04/file/96768617276.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/160b3eac7cfc59---fepakob.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/minixedotikevitizeraves.pdfIn PDF document text
    • http://bkht.vn/userfiles/file/80856245305.pdfIn PDF document text
    • http://bobiniauto.com/userfiles/file/mobavasuvesita.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/999042891b2830b92d6169017e85c01d/gonunirosurijafesap.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16070a8708efef---fegaviguvitizi.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767a663e6b9---bexuxunalazewiv.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613346d01733d---10268830532.pdfIn PDF document text
    • http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/60304748024.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/bbc4e23841f9d8cdb1371320d83ed991/35659093085.pdfIn PDF document text
    • http://cupta.org/userfiles/files/20210621235853.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/i3q9g8mtonuvroqevs4og1popm/48455862923.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C02 17808 bytes
SHA-256: 9ffa161210be693d0f88a17a5dd2a87294fe11a4d987a42f368b0f1cef865272
font_01_sfnt_off00013a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A5F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15276 10676 bytes
SHA-256: b5e2c7376f422d09866d54fd282b1702cbc5e28dba6eb2579beaa92313ffbc85

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