Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ce7af276adb9a6…

MALICIOUS

PDF

74.3 KB Created: 2021-04-11 04:37:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fef877ee51d59a246078be84844d8551 SHA-1: dcbab3868bf124df57e65331b9ec39f1c12440c8 SHA-256: 93ce7af276adb9a6f1c54eb57a0000c2021ae076345787285ff3a853081c2f00
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm designed to redirect users to external sites. The document body, though heavily obfuscated, suggests a lure related to 'how to find date on google maps'. The presence of numerous external URLs, including one pointing to 'xajibur.ru', indicates a probable attempt to distribute further malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=how+to+find+date+on+google+maps PDF link annotation
    • http://arfesopt.com/britax_marathon_car_seat_expirationokfk3.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/8atfPgc/jikixovada.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/bhYhW9J/oceanhorn_full_paid_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/igii67D/damosewun.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/qUjeejd/nfl_network_preseason_schedule_directv.pdfIn PDF document text
    • http://merishwheelrecords.com/62007856136xka4s.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/the_giver_chapter_146zx4z.pdfIn PDF document text
    • https://cdn.sqhk.co/doparibi/KBOgijf/frag_pro_shooter_for_pc.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/bajunlmtfc.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/chijiih/buvijexafujivubile.pdfIn PDF document text
    • http://bet-info.ru/how_to_season_a_masterbuilt_electric_smokercqylt.pdfIn PDF document text
    • http://stebsmeh.space/the_man_nobody_knows_summarydgvji.pdfIn PDF document text
    • http://nowtorrentz.com/tv_program_proposal_samplee6sxg.pdfIn PDF document text
    • https://cdn.sqhk.co/joxufejod/bggfIjf/gulapuzagejer.pdfIn PDF document text
    • http://meetplafond.xyz/women_s_sierra_chunky-_heeled_platform_pumpszqmdw.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/YDhbiiI/scorpion_special_moves_mk11_xbox_one.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://627ea4a7-3f28-4bf3-8c99-6a9da7dacf48.filesusr.com/ugd/1970e2_fad81151182e4fef9ef4f0871e71d380.pdf?index=trueIn PDF document text
    • https://aa6d2f86-95e2-42cc-897e-6bbd71c3a116.filesusr.com/ugd/78daac_30be32a21ac24a1b8d56000f3ab9dcf5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/zizaraze.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/autocad_coordinate_lisp.pdfIn PDF document text
    • https://9005981c-20a7-4b93-9dfe-a591c0bc6fcf.filesusr.com/ugd/afbba5_9bf2c219e6a34736b92658745802e256.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE810 5316 bytes
SHA-256: 10021f17b0572a94186012d8cbd8d5bcb9f74acab4d8c4fe63944a5a51fb41e2
font_01_sfnt_off0000fa30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA30 9912 bytes
SHA-256: 1aab65442f47a0e15ef3dbb1baeedd4d0f22cfa79e716ec259926751d9c50901