Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb61dac9530a8a7…

MALICIOUS

PDF

77.0 KB Created: 2021-04-09 05:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1184bd3a190461b40057b8b282abcda8 SHA-1: 1bdf6ee9314cc8b8441d0bf54da3a313aeddc66b SHA-256: bdb61dac9530a8a7b7d2bf99d31056f7f04b2f586eb775c9a79c8015f374c602
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful content.

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://golowaki.ru/strik?utm_term=player%2527s+handbook+dnd+5e+races
    • http://dietnatur.fun/26091652479pe5a4.pdf
    • https://cdn.sqhk.co/sazipuvaxiv/iMtgKgi/75704172643.pdf
    • https://cdn.sqhk.co/doxowite/ciashfr/star_picket_fence.pdf
    • https://cdn.sqhk.co/feduvefas/M0RkhiL/unity_3d_snake_game_tutorial.pdf
    • https://guxulixekakuved.weebly.com/uploads/1/3/5/2/135294256/wepufafamajafep.pdf
    • https://cdn.sqhk.co/gesaxamadew/icUzge2/hockey_goal_crease_dimensions.pdf
    • https://fudatavog.weebly.com/uploads/1/3/4/8/134894714/tiwotuxuzuw_difusulo_nekapewikikum_metefonozefag.pdf
    • http://henrysavbr.site/zeguvagojtok1.pdf
    • https://mikezopa.weebly.com/uploads/1/3/4/3/134366842/dibuwelitufavegemiw.pdf
    • https://cdn.sqhk.co/widiroje/cibXjfL/naver_papago_ai_translator.pdf
    • https://cdn.sqhk.co/woleparos/jbJKBic/get_virus_warning_on_macbooks.pdf
    • https://cdn.sqhk.co/rizijuwet/cIxb9gd/cut_the_rope_free_download_for_windows_7.pdf
    • https://cdn.sqhk.co/jalinutaxos/Thegdqt/63616166380.pdf
    • http://idealsit.fun/musemezifivos14h6u.pdf
    • https://levevuwakute.weebly.com/uploads/1/3/4/9/134904524/gezabagibu-kunifan.pdf
    • https://cdn.sqhk.co/zaxuloxedu/hggiigd/equalizer_fx_pro_rexdl.pdf
    • https://cdn.sqhk.co/tinupolureg/hgdxsHa/1228500308.pdf
    • http://slmit.fun/848548895517rovj.pdf
    • https://cdn.sqhk.co/jilebodetifa/7iijfhj/gifafebazenebamitenunej.pdf
    • https://vujirazezada.weebly.com/uploads/1/3/2/6/132681664/b993233802.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pazerogasarinu/whirlpool_authorized_washing_machine_service_center_pune_pune_maharashtra.pdf
    • https://s3.amazonaws.com/papuja/imaginal_exposure_worksheet.pdf
    • https://s3.amazonaws.com/wukevirenesu/electrical_engineering_book_by_jb_gupta.pdf
    • https://s3.amazonaws.com/dakebesuvum/what_is_news_report_brainly.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_off0000ee90.bin
501e2cb480dca192d20f48a7f777fb102a86973da8f3997d037cf878f7847b88		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE90 5492 bytes
font_01_sfnt_off00010148.bin
a1b6841876176852dbebdb29207f3cd2f67361b488d20f7d32386fa727eec9e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10148 10956 bytes

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