Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0e0787416224a5…

MALICIOUS

PDF

83.2 KB Created: 2021-09-20 00:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 381dd524e6196e8d9f5a7f5f4b1b3f3f SHA-1: 09730d0893f8ef826f9234dec82608fde89f45c6 SHA-256: 2f0e0787416224a57a9c4acac4b66cf51635cbd76f68002118fbcfac240960dd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains numerous embedded URLs pointing to external domains, suggesting it functions as a link farm. The presence of external URIs and the link farm heuristic indicate a likely intent to redirect users to potentially malicious sites for phishing or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=how+to+turn+off+talkback+on+android+tablet PDF link annotation
    • https://naves.cz/res/file/wafugebaxi.pdfIn PDF document text
    • http://itagqatar.zajeltel.com/itag/file/files/venuxutafegemigozajare.pdfIn PDF document text
    • http://tce.vn/imagesflashupload/file/59960947053.pdfIn PDF document text
    • http://thecargonepal.com/userfiles/file/86624061005.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/52591024398.pdfIn PDF document text
    • http://qlinairnv.be/userfiles/file/95927839775.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gufezefavopipapajigat.pdfIn PDF document text
    • https://kltccompany.com/ckfinder/userfiles/files/61250076536.pdfIn PDF document text
    • https://legyenegyjonapod.hu/userfiles/files/64267824512.pdfIn PDF document text
    • http://hybsch.it/upload/file/pugaradazoleraxasigij.pdfIn PDF document text
    • https://coastalholidayproperty.com/ckfinder/userfiles/files/dalurivejibivasoniz.pdfIn PDF document text
    • http://quranday.org/userfiles/file/kimatuba.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/niwovim.pdfIn PDF document text
    • https://majubesar.net/contents/files/30489204668.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/refonizoxidegiw.pdfIn PDF document text
    • http://mcdanielz.eu/files/file/93641578273.pdfIn PDF document text
    • http://ashioke.com/images/library/File/kotifivonowag.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/kokatovexobafajixi.pdfIn PDF document text
    • https://vicareyou.com/userfiles/file/68028923252.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/10kt9hhh8e8it69175l2sm41vp/82890680289.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/77405204211.pdfIn PDF document text
    • http://mustang.tom.ru/jsplugins/ckfinder/userfiles/files/lewixiwuda.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_off0000e21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA33 10712 bytes
SHA-256: 17383639ea394529ead2c5851862bfc01ebdb82757f41749fe4fa5c17fb8c7c5
font_02_sfnt_off000112e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E6 16844 bytes
SHA-256: c9145a8ff0a7f71d8f3a1856b12ab58f7a2046819e94ee2ee4b85f9d44a8428e

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