Malicious PDF — malware analysis report

Static analysis result for SHA-256 e31520e06c514fc9…

MALICIOUS

PDF

274.8 KB Created: 2021-01-26 17:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2de04d75015844ee731d8581378e4fb2 SHA-1: d41daa65883242aa48dca168263f6597c2d26c46 SHA-256: e31520e06c514fc96da54d5dc0da80175131f1a7c741e97f360ace5703c02ad5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The embedded URL points to a suspicious domain, likely serving as a lure for a malicious download. The document body, though heavily obfuscated, contains references that align with a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/aws?utm_term=archero+mod+apk+1.+0+9 PDF link annotation
    • https://dopozigixojak.weebly.com/uploads/1/3/4/5/134509916/dulupejubogexupif.pdfIn PDF document text
    • https://sunajekivogemaz.weebly.com/uploads/1/3/4/8/134895881/gusameno.pdfIn PDF document text
    • https://cdn.sqhk.co/sokavuwoz/JcFiiid/piwajezitimazuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472481/normal_60090debbe25a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461509/normal_600daf316ab72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422144/normal_5fe0174137f66.pdfIn PDF document text
    • https://wofovado.weebly.com/uploads/1/3/1/8/131871653/felubetidajoga.pdfIn PDF document text
    • https://gidapozu.weebly.com/uploads/1/3/1/3/131379371/timuverilemozi.pdfIn PDF document text
    • https://cdn.sqhk.co/bozawenibiwa/irhfjaD/sales_books_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/veYoheg/slot_games_free_play_now.pdfIn PDF document text
    • https://sazadasixitabe.weebly.com/uploads/1/3/4/4/134404720/nuxewitununuzuzebo.pdfIn PDF document text
    • https://dijuwinepogiw.weebly.com/uploads/1/3/0/7/130738679/3e3c2eccb57b34d.pdfIn PDF document text
    • https://piminudoligot.weebly.com/uploads/1/3/4/6/134688392/3ff3b034c7de.pdfIn PDF document text
    • https://vofitusu.weebly.com/uploads/1/3/5/3/135301199/sawivipoz.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/Rqljii4/lulenevifidigavarizi.pdfIn PDF document text
    • https://benanuvez.weebly.com/uploads/1/3/0/8/130813453/9309498.pdfIn PDF document text
    • https://bupuzufemu.weebly.com/uploads/1/3/1/4/131452870/5c88f82375ccb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000404af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x404AF 5540 bytes
SHA-256: af6b65a1fabba0cecaf910d3d0928cd4a6eb79195a7465ed0503b77b12b46cc6
font_01_sfnt_off00041762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41762 11672 bytes
SHA-256: 4393571560ca9bb05d02ef3b1bc23a049f30026eed8887cc01171a918b4e0e33

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