Malicious PDF — malware analysis report

Static analysis result for SHA-256 c752522489a569a9…

MALICIOUS

PDF

78.1 KB Created: 2021-04-07 07:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5457bcba5b191fc765f259f1a6d07f23 SHA-1: dbd1f7ae28a106242337c41e31782f8f13ccc1a2 SHA-256: c752522489a569a9bd6d75e670b9f7b26eb877559da69adfb862b6470f1e37f0
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to malicious websites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/award?keyword=bankmed+plans+2020+pdf
    • https://cdn.sqhk.co/vanewano/jjfgcgg/callaway_golf_club_sets.pdf
    • https://static.s123-cdn-static.com/uploads/4496607/normal_5ffacc397d28e.pdf
    • https://cdn.sqhk.co/malakizojaji/xhhQcgf/juvazuj.pdf
    • https://vunidiripoga.weebly.com/uploads/1/3/1/4/131453449/jemovogufukibuleze.pdf
    • https://cdn.sqhk.co/ribobujir/ggf6ESK/food_giant_ripley_ms_application.pdf
    • https://wobanuwu.weebly.com/uploads/1/3/5/9/135959505/vibifip_buxasas_dilalomoga_futenobab.pdf
    • https://cdn-cms.f-static.net/uploads/4464521/normal_60497b9244541.pdf
    • https://cdn-cms.f-static.net/uploads/4390373/normal_605701de2a27c.pdf
    • https://lovaxases.weebly.com/uploads/1/3/4/6/134685664/zapixiwibavori-jonaripekusilib-ponavedude.pdf
    • https://cdn-cms.f-static.net/uploads/4505125/normal_5fe66a64a3d82.pdf
    • https://cdn.sqhk.co/vifejoneses/jgMggM9/tips_for_bitmoji_avatar_emoji_mod_apk.pdf
    • https://cdn.sqhk.co/fusaduxuw/F9iiVhL/dream_house_days_mod_apk_2._2._0.pdf
    • https://bewepuxajijasi.weebly.com/uploads/1/3/4/3/134362307/1007656.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tugumeb/popeyes_chicken_sandwich_vs_chick_fil_a_nutrition_facts.pdf
    • https://s3.amazonaws.com/xapidajovaji/manual_del_cultivo_de_pia.pdf
    • https://uploads.strikinglycdn.com/files/29be499e-091d-413d-bfec-e182e6900e49/mobudogefesujekoturenu.pdf
    • https://s3.amazonaws.com/ruzumeb/cavatina_tab_guitar.pdf
    • https://uploads.strikinglycdn.com/files/43e3ff71-6fd8-4d23-90eb-98977bc51a34/xewujagujinebubafiwu.pdf
    • https://uploads.strikinglycdn.com/files/8de59bdd-67a8-4a91-8666-59990e44918d/jemuxanula.pdf
    • https://uploads.strikinglycdn.com/files/6d87fae3-1355-4aff-9665-e666e789881a/dokinam.pdf
    • https://s3.amazonaws.com/purixifusipelid/42607128204.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_off0000f376.bin
8bed07456606a9392c302dca907bd6832a615fe402b30de344debf7596e91299		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF376 5480 bytes
font_01_sfnt_off00010612.bin
1becace20e759d30eb64d367481de4626cbc17fa9fd1cff2bdcdbd08ff0f7a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10612 11108 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.