Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d96ccbfbcf1103c…

MALICIOUS

PDF

72.5 KB Created: 2021-06-03 20:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7d25940b09e762be33a3a0775ad1776 SHA-1: 7e4f00202044ad31873148f823f29bf42a8d2fc4 SHA-256: 6d96ccbfbcf1103cac998a310ed14a26067b234818ddfdffeedee3d07094281a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, with a critical heuristic identifying a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/123?utm_term=rooted+in+mindfulness+guided+meditation
    • https://dadizatutelebi.weebly.com/uploads/1/3/1/0/131070904/mataduwugenis.pdf
    • https://novudadunofeted.weebly.com/uploads/1/3/1/6/131637175/1917b5eef73e.pdf
    • https://static.s123-cdn-static.com/uploads/4475565/normal_60065bd9d210c.pdf
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/1903734.pdf
    • https://vupafoteb.weebly.com/uploads/1/3/7/5/137509526/13b248b227.pdf
    • https://mizeximo.weebly.com/uploads/1/3/4/2/134265944/245848.pdf
    • https://relotozaku.weebly.com/uploads/1/3/4/2/134266658/fa30c037ebffdd8.pdf
    • https://jokoturatel.weebly.com/uploads/1/3/5/9/135993825/1ce49b41a2.pdf
    • https://finolija.weebly.com/uploads/1/3/4/6/134625313/7877142.pdf
    • https://cdn-cms.f-static.net/uploads/4385859/normal_6042cb73793be.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pakesobiroge.pbworks.com/f/bebiwufamosebiluvatupi.pdf
    • https://uploads.strikinglycdn.com/files/a9b67b26-515d-40f6-8763-0b245c4d1235/justin_timberlake_-_cant_stop_the_feeling_oscars_performance_2017.pdf
    • https://uploads.strikinglycdn.com/files/1ef0be81-fe47-41e8-afd3-caee499fe3d8/agatha_christie_hercule_poirot_books_ranked.pdf
    • http://ritijix.pbworks.com/w/file/fetch/144529644/funapikunani.pdf
    • https://uploads.strikinglycdn.com/files/db79fbc9-49cf-4e10-8dc7-23e3e88f22ee/inkscape_free_download_for_windows_8_64_bit.pdf
    • https://uploads.strikinglycdn.com/files/9937598a-d050-4e51-9cbf-63d01fe24369/biocalculus_calculus_for_the_life_sciences.pdf
    • http://jiboduxoguv.pbworks.com/f/perajifibatewuf.pdf
    • http://rixepal.pbworks.com/f/25949873439.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0cb.bin
7e79908bf52106650feb8e99d130bc6fb2435d7fa0be0087a3c2165bf4788628		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CB 5136 bytes
font_01_sfnt_off0000f23c.bin
16fceedf3b1a9b8c1398576d10c03f86ca065e2e36dd717e0c89270dd55073d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF23C 10220 bytes

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