Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa36ea464b7275b0…

MALICIOUS

PDF

78.9 KB Created: 2021-03-28 04:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e16265851c29b148465bd8125dcb5275 SHA-1: b7330097531945b5509189ad33e19e6e525238e2 SHA-256: fa36ea464b7275b0cea07b850cbb0e897070f1c13f0988bf67f114e59487a7e0
116 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the 'PDF_GOTO_REMOTE' heuristic indicates an attempt to redirect the user to an external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Remote GoTo action medium PDF_GOTO_REMOTE
    PDF references a remote or embedded document via GoToR/GoToE with an extension-less or unresolved target
  • 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://jumiwimov.ru/123?utm_term=habitat+bioclimatique+pdf
    • https://cdn-cms.f-static.net/uploads/4401559/normal_604b3770d4bc2.pdf
    • https://cdn-cms.f-static.net/uploads/4529149/normal_5fdaef6184fa2.pdf
    • http://supanigavig.iblogger.org/67103213135.pdf
    • https://cdn-cms.f-static.net/uploads/4379240/normal_6012ea8231c42.pdf
    • https://cdn-cms.f-static.net/uploads/4475194/normal_6019d217e2fad.pdf
    • https://cdn-cms.f-static.net/uploads/4465151/normal_603eacb9ae109.pdf
    • https://cdn.sqhk.co/jolodovi/aSigQld/26775149634.pdf
    • https://static.s123-cdn-static.com/uploads/4388427/normal_600626e5946e2.pdf
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5fd15639c70ff.pdf
    • https://cdn-cms.f-static.net/uploads/4476782/normal_605faf35d7efb.pdf
    • https://cdn-cms.f-static.net/uploads/4449984/normal_5fd878a93ce2e.pdf
    • https://cdn.sqhk.co/jiwejujorod/giehcF6/2019843797.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tasifomarefid.rf.gd/golds_gym_treadmill.pdf
    • http://papelevinijefab.rf.gd/can_i_use_vicks_vaporizer_while_pregnant.pdf
    • https://s3.amazonaws.com/zuvovoxigumuz/gotor.pdf
    • https://uploads.strikinglycdn.com/files/3f20ab25-cf2b-4c35-bdf1-3e338660cdac/kusesaxurowo.pdf
    • http://mexowotevofo.rf.gd/arsenal_fixtures_2019_to_2020.pdf
    • https://uploads.strikinglycdn.com/files/c12cc9fb-882a-4cec-8bfb-66bb6d93a5a3/zamozixegapow.pdf
    • https://uploads.strikinglycdn.com/files/20256aa9-eef5-4471-9271-340369e12bee/36_questions_that_create_love_arthur_aron.pdf
    • https://s3.amazonaws.com/sasufufa/hazards_and_risks_in_the_workplace_worksheet.pdf
    • http://lobowubuzo.epizy.com/7119355368.pdf
    • https://uploads.strikinglycdn.com/files/db873b86-df78-4f68-a276-039874592472/xadudaxoxatiwobudetojele.pdf
    • https://uploads.strikinglycdn.com/files/0c62cf68-9ccd-42d0-95e3-776bb5d23f9d/vavonir.pdf
    • https://s3.amazonaws.com/xirixepo/zupasizonafatu.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_off0000f36f.bin
f0ae435a4b023985e02c518c2657afcfceb2974be1fb46e1900b3e8d2ba042c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF36F 5252 bytes
font_01_sfnt_off00010539.bin
c52bb620ec66122f2abd2bc6166e7a686b3e8e080c859920df615bc2f83afe2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10539 12496 bytes

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