Malicious PDF — malware analysis report

Static analysis result for SHA-256 0291bdcc207b6b50…

MALICIOUS

PDF

89.1 KB Created: 2021-04-02 04:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e38a98bd46d7bf2c014153ef44ce2fe SHA-1: b1c26c60f67bab1a3649e962e4c39595fdc55659 SHA-256: 0291bdcc207b6b501f6d1976ec02e4f0406de132bde7b499902a0ffb2ed7c7f1
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are structured to appear as academic or summary documents, a common tactic for advance-fee scams. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates this intent. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/aws?utm_term=friedrich+nietzsche+genealogy+of+morals+summary
    • http://stankoff.org/binomische_formeln_bungen_schwernl903.pdf
    • https://cdn.sqhk.co/vukixukafoga/AgiWlOz/magic_poser_mod_apk_latest_version.pdf
    • https://cdn.sqhk.co/lalamiteliw/Ligcghg/21396550475.pdf
    • https://tofesozexeraj.weebly.com/uploads/1/3/4/6/134610570/borafijefuwaj.pdf
    • https://mixojokujize.weebly.com/uploads/1/3/4/3/134387696/2323324.pdf
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/porenununuw.pdf
    • http://netewe5.xyz/xibuxisepuledwzy7.pdf
    • https://fuwowomazusora.weebly.com/uploads/1/3/4/0/134000162/zikizasejolibu_mimirokusapiruw.pdf
    • https://cdn.sqhk.co/nananava/liiBI63/sniper_elite_zombie_army_2.pdf
    • http://tryraisins.club/85294110858b7ma3.pdf
    • https://tamidotojo.weebly.com/uploads/1/3/1/8/131858916/rezilisirilibep_xenobodumaxina.pdf
    • http://filmera.ru/82341209131gucsy.pdf
    • http://aazzzry.space/58709786631gdai4.pdf
    • https://pubategikosiw.weebly.com/uploads/1/3/4/1/134131453/a8389008e4aa26.pdf
    • https://cdn.sqhk.co/riwoxedaki/eYNyo1V/fill_line_colour_3ds.pdf
    • https://cdn.sqhk.co/fabokofe/HheSXia/tag_chaser_define.pdf
    • https://cdn.sqhk.co/nakizenonetu/amNhegg/tank_battle_heroes_mod_apk_rexdl.pdf
    • https://kakifiku.weebly.com/uploads/1/3/5/3/135347754/e3582.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dikuwunoxoxa.epizy.com/atomic_absorption_spectrophotometer_principle.pdf
    • http://jidabalelibixu.rf.gd/statistics_in_psychology_course_online.pdf
    • http://lajirobodogew.epizy.com/56780598481.pdf
    • http://sobuzazan.rf.gd/aloha_browser_apkpure.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011886.bin
8d636cbbfca6004a2bfb5545d661d2fcb9955f94b80da5da8f468708155663d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11886 5544 bytes
font_01_sfnt_off00012b49.bin
98ba9e5984d7f61668cfc9499c8f812d4170f9127ec42944515c92ccfbcb490c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B49 12536 bytes

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