Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84c301b3ca04bb2…

MALICIOUS

PDF

83.2 KB Created: 2021-03-01 21:41:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd50ab7bb7c4cfcd1e9a671e930c0a25 SHA-1: 7adf69dbd0fd09b5282f1db66c85c6a162379a1b SHA-256: e84c301b3ca04bb205bd8fc16d05862cd4cbe9dc231138e6524b1e3b81c5e80f
96 Risk Score

Malware Insights

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

The file is a PDF containing embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure, likely related to search results or document downloads, directing users to malicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=ffx+yojimbo+best+answer
    • https://cdn.sqhk.co/kotoweraga/b9jchb8/31477001326.pdf
    • http://slmit.space/50183723379a8rhs.pdf
    • https://giwizakewat.weebly.com/uploads/1/3/1/8/131857916/d3a04ec8150d86a.pdf
    • http://todayshop.website/neluvanavamulqi2q.pdf
    • http://cancandance.org/23701461411kpwdp.pdf
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/lisapupifopowu_galukuber.pdf
    • https://cdn.sqhk.co/fekawitaxug/geOjjih/fipogu.pdf
    • http://vorakumezaxof.mygamesonline.org/lelisidomumegaxawe.pdf
    • http://repair-foto.ru/ford_6.0_powerstroke_oil_capacityfsy95.pdf
    • https://noserosajegupa.weebly.com/uploads/1/3/1/4/131453720/d319f8.pdf
    • http://jafetezaki.iblogger.org/common_core_sheets_money_word_problems.pdf
    • https://zonexaxu.weebly.com/uploads/1/3/4/7/134700630/jatamivawal.pdf
    • http://sdl-trade.com/tufafutigiwa2ukhl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fefasowuri.rf.gd/lirexex.pdf
    • http://nojubeweba.epizy.com/9943648678.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_off0000fa00.bin
fe54136884be8a3d3bbc6d544ab2fd000ff2f7a014bf3c014b6c3ddff9aedd94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA00 4960 bytes
font_01_sfnt_off00010b52.bin
da316a0645dc1a10b61c990f5b4b0d7807a9c654020013e393d9dfa47e530cde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B52 5316 bytes
font_02_sfnt_off00011d6f.bin
31f3fa23411ab572cbd8d818a53dd4d80935a36bac842d7c5f69e9482d02b646		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6F 9972 bytes

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