Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eafb8dc04ffa5f7…

MALICIOUS

PDF

73.0 KB Created: 2021-09-20 23:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5e175569ba8a81e316bc1dd870637658 SHA-1: ff53d5561ee98f7418e650f86d30186731b4e3bd SHA-256: 2eafb8dc04ffa5f7f2e2a711c625d7540951df4f468dcdb29e4002dedb951673
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs and is identified as a link farm hosted on disposable domains, indicating a likely phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://philabc.ru/uplcv?utm_term=convert+website+to+apk+android+studio PDF link annotation
    • http://globalnetworks.de/www.galabau-poscher.de/main/preview/ckfinder/userfiles/files/43135922975.pdfIn PDF document text
    • http://dyccpharma.com/upload/files/tujemasuwevopubo.pdfIn PDF document text
    • http://turatabor.hu/media/jajasinurixakodumonirana.pdfIn PDF document text
    • https://ngenadmin2.nextgenphotosolutions-beta.com/app/webroot/files/file/58678639420.pdfIn PDF document text
    • http://savaksangida.com/resimler/files/51464942024.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/14889631900.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/90a74daca80c8529ca37e13b01762e8c/9148608758.pdfIn PDF document text
    • http://tk-weld.com/images/library/File/kixokosibevepofa.pdfIn PDF document text
    • http://ebbers-schilderwerken.nl/uploads/files/83270879980.pdfIn PDF document text
    • http://as-eng.biz/userfiles/file/fusozutoxe.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/dodopepefebije.pdfIn PDF document text
    • https://spitalmoldovanoua.ro/ckfinder/userfiles/files/48368483941.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/29249954451.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/3164458641.pdfIn PDF document text
    • http://scarpatti.com/files/66236069487.pdfIn PDF document text
    • http://lesmashclub.com/imgUpload/files/durasozomajoriponus.pdfIn PDF document text
    • http://ride.hu/images/uploads/files/pudigusoxewatelapaz.pdfIn PDF document text
    • https://mobilpetrol.olajpark.hu/files/files/69946286310.pdfIn PDF document text
    • http://tourgrodno.by/images/content/file/lonebedevapom.pdfIn PDF document text
    • http://wiskind.com/filespath/files/20210916030139.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/70a56941d7836cc0a3fe10151594d54a/momoko.pdfIn PDF document text
    • http://ddaengshop.com/ckupload/files/35797831310.pdfIn PDF document text
    • https://botroul.be/uploads/wipawufemurizuwef.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_off0000b96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB96A 10856 bytes
SHA-256: 2540747c890781d438cb14c524532df39ff655ec63f20dac3c67f0283c509c47
font_01_sfnt_off0000d283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD283 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ea95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA95 16820 bytes
SHA-256: 03d8fd09a0dac2296c626ecedd6d5d3dd28dceb890d96705b56491ad283d7ea9

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