Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc15e9395855542e…

MALICIOUS

PDF

80.9 KB Created: 2021-05-10 00:46:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9288298134b875c44570e974bc1058f5 SHA-1: 9478142ebfad497d2aef4547b868b4bf64a22477 SHA-256: bc15e9395855542e8ab937cc729bcfc2a1fc41e0d79b089a51b8af41131a7404
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL related to 'sony bravia tv' queries, suggesting a phishing or SEO spam lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the PDF structure itself is used to host a large number of external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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-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://kuzutuzo.ru/strik?utm_term=what+is+the+remote+code+for+sony+bravia+tv
    • https://kebolegenadudus.weebly.com/uploads/1/3/1/4/131454121/todibidilinubopufuni.pdf
    • https://letezinujafi.weebly.com/uploads/1/3/4/9/134901841/fifusizema.pdf
    • https://cdn.sqhk.co/xuluriwu/vhjAaja/girevipinelaxisuravam.pdf
    • https://bimevaxufozuz.weebly.com/uploads/1/3/2/6/132683359/salumidigumimonu.pdf
    • https://duwujesipegon.weebly.com/uploads/1/3/4/8/134883919/zopozilo_rotad_perila.pdf
    • https://cdn.sqhk.co/dukoredod/UjiiiV4/live_streaming_news_portland_oregon.pdf
    • https://garanokuwepo.weebly.com/uploads/1/3/0/8/130874617/vokafuwonexezexu.pdf
    • https://tebojejuket.weebly.com/uploads/1/3/4/7/134764489/b03fc69bf9d12.pdf
    • https://dalegoronatodul.weebly.com/uploads/1/3/4/3/134309481/7959519.pdf
    • https://cdn.sqhk.co/kagaxavog/fiaehej/meme_sound_oof_dun_dun.pdf
    • https://vekosafadowob.weebly.com/uploads/1/3/4/8/134868088/2461495.pdf
    • https://cdn.sqhk.co/wosipuvetot/bAbWduW/kutaduzoromariverito.pdf
    • http://nibumuxadata.66ghz.com/sojufugajedisubunagow.pdf
    • https://renepavavoz.weebly.com/uploads/1/3/4/0/134012855/4666057.pdf
    • https://cdn.sqhk.co/pefevepufi/jeRjaja/90817412105.pdf
    • https://mewuvonemifutu.weebly.com/uploads/1/3/5/3/135394867/4574354.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_c807081d61654983989bf090890d2a2a.pdf?index=true
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_6c9137ed1b14408ca19fb0eab37236a8.pdf?index=true
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_4c6ca5c87a9445a9afdb1cb673298abd.pdf?index=true
    • http://rajixubododafu.epizy.com/destiny_2_guide_steam.pdf
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_4b6267913a1f43fc87fc8ea14e864577.pdf?index=true
    • http://pibonev.rf.gd/17400315663.pdf
    • https://13cfbe10-32e4-4d7a-9072-8dbd3280e6b8.filesusr.com/ugd/994e9e_bf98df48fba040049394723bbd9dd704.pdf?index=true
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_368aec4f179743b59bc8261ee9ec6281.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc90.bin
2bb02dbbd934ce44cfdc35af2ec1cb3327da757295c34b1c11b6906eb0d93dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC90 5544 bytes
font_01_sfnt_off00010f56.bin
7e2a3c07c0f144cda050192f63443c6a1f59c9fafa4ea7da900421a5382e133a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F56 11304 bytes

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