Malicious PDF — malware analysis report

Static analysis result for SHA-256 d11a935859993f99…

MALICIOUS

PDF

94.2 KB Created: 2021-05-21 23:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91d80627c43b563a11f4a89944b5b8e8 SHA-1: 51c023faea836863b03552ddf439979ef61c25e2 SHA-256: d11a935859993f9909f73c6c773e8c5a906adcfba8a04c47dfa54a643545afca
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to other PDFs, suggesting a link farm designed to distribute malicious content. The primary URL, 'https://soxebez.ru/strik?utm_term=backstroke+2017+full+movie+free+download', indicates a lure for pirated content. ClamAV and ML heuristics confirm the malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/strik?utm_term=backstroke+2017+full+movie+free+download
    • https://nonelugo.weebly.com/uploads/1/3/0/7/130775267/kojokutibumifux.pdf
    • https://fexifeter.weebly.com/uploads/1/3/4/6/134612515/jujuwogusosel.pdf
    • https://guxojifupu.weebly.com/uploads/1/3/1/4/131438233/7608944.pdf
    • https://bapizemu.weebly.com/uploads/1/3/1/1/131163962/roxogarelegepu.pdf
    • https://duvefotod.weebly.com/uploads/1/3/1/3/131380754/xibabezi_likimikan_ruridob_fibuku.pdf
    • https://kibanelamuvudu.weebly.com/uploads/1/3/0/9/130969844/zakofaravopewuvoz.pdf
    • https://xorizetevapaze.weebly.com/uploads/1/3/1/4/131438163/2005049.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fadadedezeker/rofiwabitima.pdf
    • https://s3.amazonaws.com/juduk/consolidated_audit_report_format_2019.pdf
    • https://s3.amazonaws.com/vufupu/walijunegonedubo.pdf
    • https://s3.amazonaws.com/dejazuvorira/powamoxib.pdf
    • https://s3.amazonaws.com/jowutoneranemuk/marriage_separation_agreement_template_uk.pdf
    • https://s3.amazonaws.com/kudowo/fios_quantum_g1100_review.pdf
    • https://s3.amazonaws.com/punurum/ascender_pay_user_guide.pdf
    • https://s3.amazonaws.com/fukezavazuj/archery_game_online.pdf
    • https://s3.amazonaws.com/xapidajovaji/little_house_on_the_prairie_season_2_episode_11_cast.pdf
    • https://s3.amazonaws.com/gofiguj/dadiruwezo.pdf
    • https://uploads.strikinglycdn.com/files/61aecd20-ea63-4473-bd4c-48e9c4965c77/dusk_till_dawn_piano_sheet_music.pdf
    • https://s3.amazonaws.com/wiwamoxamo/formaggio_canestrato_di_castel_del_monte.pdf
    • https://s3.amazonaws.com/musoxifuvitalo/morolaxolubirigikun.pdf
    • https://uploads.strikinglycdn.com/files/9221e639-e2ec-446b-b3a1-9bdddc31c7db/barnett_vortex_youth_compound_bow_package_45_lb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011de8.bin
74800caebf357ab1ce0323c048485754386d4f214fc4dee6a77f38f4cd580abb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE8 3732 bytes
font_01_sfnt_off00012b37.bin
d4920ccf60948a0ad8fc04961cf4ca92f59f909ad6d8a01eb33b9a3c4892c363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B37 5836 bytes
font_02_sfnt_off00013f28.bin
48d4214a135eac3f8e2acb2001cb20863986b56fc766ee8972fe92f29f62cba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F28 13228 bytes

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