Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7794a7136e6982…

MALICIOUS

PDF

80.2 KB Created: 2021-03-29 15:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d215434f0703bc8e9de53d0a9727ae2f SHA-1: 6b3d0a87459b351b545368b963fe59bedb021925 SHA-256: 4a7794a7136e6982cd73ae7711ea641951616dcd56273191374a601ac3edc28e
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The PDF structure itself does not contain readable content, but the presence of external URIs suggests an attempt to lure the user to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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://bologen.ru/wix?keyword=fulgrim+pdf+pl PDF link annotation
    • https://cdn.sqhk.co/kixagixupo/jbqAijl/gutolamediregovi.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/giSgfRd/9817224176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_6012965135b18.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/6jigjhe/44752543961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382627/normal_60498c174e5eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409610/normal_6037ae408c929.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/6iajahe/sizujugubajat.pdfIn PDF document text
    • https://cdn.sqhk.co/rizavoxaje/lRC4Zhd/zadedaxibaxafejujojefaj.pdfIn PDF document text
    • https://cdn.sqhk.co/tumitibira/hiSjiif/50412648773.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/jeojcif/roll_the_ball_slide_puzzle_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/bih0zid/93438444670.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/iak31np/tugotikifefel.pdfIn PDF document text
    • https://cdn.sqhk.co/duzoxibuf/imFiihj/sokopizuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455376/normal_6058d73d3f1cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409604/normal_5fd184a6ee711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389601/normal_6031e79f57929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421335/normal_6041a515861aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423148/normal_60545ab154ffc.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/epf4iji/ambareesha_kannada_hd_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386349/normal_603835fed7c8a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kudadurazeze.rf.gd/farmall_super_av.pdfIn PDF document text
    • http://nixifeka.rf.gd/vejotedivoxetuzizapo.pdfIn PDF document text
    • http://sexepafo.epizy.com/toram_online_dual_sword_leveling_guide.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_off0000fb7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7B 4928 bytes
SHA-256: 52a9a00ebc857676ff5858b7f3973886e5e37b5e3d5a61bd88cd8147f9c36ce1
font_01_sfnt_off00010c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C32 12268 bytes
SHA-256: ed962672b0dcba190f952fa12b92d903a4fa2f185db3d4300752ac20af4a7376

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