Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d70d26d499a3740…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 06:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c09260c8d423c0e2f9a9511e11296a9d SHA-1: 498fd900f646b12aadf316bdc326f94c40af96e4 SHA-256: 3d70d26d499a37407e0628c9978de23a2bed5a2348f12c50dcb7a79e775fc5f7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/wix?keyword=nutrition+for+foodservice+and+culinary+professionals+9th+edition PDF link annotation
    • http://jawogili.22web.org/python_for_beginners_edx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416923/normal_6018369941eda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_60127aa911b20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402948/normal_60194d1bb31d9.pdfIn PDF document text
    • http://malapiwo.66ghz.com/artificial_neural_network_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418791/normal_5fdfd15f2c4cf.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/2vArija/13856940289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_60289da277907.pdfIn PDF document text
    • http://fojudesekuxujef.22web.org/14535002731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378153/normal_60144c433892b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mizujem.epizy.com/zeruzuxamagavaf.pdfIn PDF document text
    • http://kewivawegimomu.epizy.com/what_did_cain_do_to_abel.pdfIn PDF document text
    • http://jepisaf.epizy.com/50616722827.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/55065015264.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4C 5532 bytes
SHA-256: bbf4ce9c4a0e7e48c169b2b7ddfca69e3355e3ecd1da5ee4bdc4e20efea27b2f
font_01_sfnt_off0000f22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 10256 bytes
SHA-256: 068f82be51f73ba35606cbb03c2d398eb942ebb6e0772c35cb54183398fb7070