Malicious PDF — malware analysis report

Static analysis result for SHA-256 c864516f4c168191…

MALICIOUS

PDF

120.6 KB Created: 2021-02-07 21:35:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b28569a3187cd2197c58dde368710293 SHA-1: b4b508c4ac61513d54c1926768b1b5204e6f9f81 SHA-256: c864516f4c168191af03a596cec0835b4ffa62ad573993a466bd57f8cee1d929
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a phishing or malware distribution scheme. The embedded URLs likely lead to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://maypoin.ru/aws?utm_term=lasting+power+of+attorney+guide+part+a5
    • https://cdn.sqhk.co/jekuzedu/Wkgctig/caption_for_pre_wedding_pics_on_instagram.pdf
    • https://bebotarusi.weebly.com/uploads/1/3/1/4/131454771/zalurijupikudafopax.pdf
    • https://japutiluzot.weebly.com/uploads/1/3/5/9/135991977/potuki.pdf
    • https://xufodikufidu.weebly.com/uploads/1/3/5/3/135382923/barukekurozej-dazaloxedupiseg-jejoluvo.pdf
    • https://cdn.sqhk.co/vixivizal/zrlVjbC/206935636.pdf
    • https://static.s123-cdn-static.com/uploads/4380226/normal_5fe3f7fe3b411.pdf
    • https://static.s123-cdn-static.com/uploads/4414174/normal_5feb41c78c3c0.pdf
    • https://cdn.sqhk.co/kerosumumato/33Qjlic/cake_pop_maker_online_games.pdf
    • http://thedefenseforge.com/stickman_street_fighting_3d_unblocked4gz5t.pdf
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/vegodofegari-gedibab-ginozarigebazov-nujepowobag.pdf
    • https://noxerurivago.weebly.com/uploads/1/3/4/7/134767941/zutujekavuzuf.pdf
    • https://cdn.sqhk.co/koroxofusino/f54ihih/woniguwelelotelet.pdf
    • https://puvugopusu.weebly.com/uploads/1/3/2/7/132711965/d1ab5bffc6b5d.pdf
    • https://mejebepagomuda.weebly.com/uploads/1/3/4/4/134494428/6390035.pdf
    • https://pelozaxuji.weebly.com/uploads/1/3/2/6/132680784/wulizegojape.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c612.bin
42c64395eb42c112ddd0cd8a22cf2a54a83b6b12f377a0add763ad43bbdb3a0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C612 5436 bytes

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