Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7178b6aebfb85a…

MALICIOUS

PDF

74.0 KB Created: 2021-02-24 10:25:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67a1827e830bbd3579784b51c5e0270c SHA-1: 9fbad7360718f53753f63b2083c670cfb077ad74 SHA-256: fc7178b6aebfb85ad61946fa2bb6eef14cb27e9334d4d754a171c3b2385f74d6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the document is designed to redirect users to malicious content, potentially a phishing page or a download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wix?keyword=algebra+1+credit+recovery+answers
    • http://soinjaga.ru/semibapogoby42i.pdf
    • http://agent-spv.space/10229119406dvrc3.pdf
    • http://smilex.club/certificate_template_design_bordery2v6r.pdf
    • https://static.s123-cdn-static.com/uploads/4401538/normal_5fedd676d05c4.pdf
    • https://static.s123-cdn-static.com/uploads/4367921/normal_600873efa110c.pdf
    • https://cdn.sqhk.co/rularijulen/eijemif/mefilabizefi.pdf
    • https://cdn.sqhk.co/sepexapubu/gjhdibw/bavilo.pdf
    • https://cdn.sqhk.co/kufalavoxig/Xkifgic/221540731.pdf
    • https://cdn.sqhk.co/jujejorule/ghghgEn/24603482107.pdf
    • http://shoop-fl.ru/stadler_form_oskar_manual3wo1h.pdf
    • https://cdn-cms.f-static.net/uploads/4406812/normal_6024139d5dd60.pdf
    • https://cdn.sqhk.co/xovujiroveg/fjijgPG/46177234077.pdf
    • http://itayoga.space/27132977549x46x1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gepopimasirepav.rf.gd/dopamine_diet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d62d.bin
a74f226693db2c8ac97530c9ca65a6ad252003b9b63e7b7a23c040cf8a54dc47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD62D 5332 bytes
font_01_sfnt_off0000e86d.bin
ecf53ab8fd1506a901bf7ba3670cbfc409d238625ec861b4fb6c9f1b573a9329		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE86D 10820 bytes
font_02_sfnt_off00010d40.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D40 4324 bytes

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