Malicious PDF — malware analysis report

Static analysis result for SHA-256 895cda574b02fc2c…

MALICIOUS

PDF

79.7 KB Created: 2021-04-01 06:00:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4fcc9e362f9f1c60c3f2034ac410a0cb SHA-1: a345756e65167a71541f1d0ea6c9b38f82de4ca3 SHA-256: 895cda574b02fc2cad7b9305f67bafd23c290ca7d8f2643e48ab0e71bc1a637d
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 as a link farm, with the primary URL suggesting a lure for free software. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • 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://ponafet.ru/strik?utm_term=can+i+get+adobe+premiere+pro+for+free PDF link annotation
    • http://luminar2-download.xyz/ls_dyna_ansysa7usq.pdfIn PDF document text
    • https://xumabilere.weebly.com/uploads/1/3/1/1/131163638/giwakiji.pdfIn PDF document text
    • http://speak4pro.com/bitabaxekomeb0obeu.pdfIn PDF document text
    • http://smartcreditus.info/pubekazebifopulosexiziw7i5na.pdfIn PDF document text
    • http://opsnatur.fun/eu4_egypt_or_arabiavtr7z.pdfIn PDF document text
    • http://reggis.info/04_dodge_ram_1500_fuel_pump_location305vv.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/20a022f0fbff94.pdfIn PDF document text
    • https://vasinurevesodux.weebly.com/uploads/1/3/4/6/134605286/580968.pdfIn PDF document text
    • http://job-finder.space/62937931562tq7j1.pdfIn PDF document text
    • https://madisilusira.weebly.com/uploads/1/3/4/3/134321428/a5dcbae964.pdfIn PDF document text
    • http://sosyaltakipcipanelin.com/505021110366vbx9.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/3923764.pdfIn PDF document text
    • http://remont-pc.website/janunugukenafcwktt.pdfIn PDF document text
    • https://jifafaxima.weebly.com/uploads/1/3/1/8/131871415/a122742f.pdfIn PDF document text
    • https://zitobejamowimuk.weebly.com/uploads/1/3/4/6/134623616/watilevimuk.pdfIn PDF document text
    • https://ganusanawopat.weebly.com/uploads/1/3/4/4/134488834/6961692.pdfIn PDF document text
    • https://sekokuvujiziv.weebly.com/uploads/1/3/4/0/134096710/bilave.pdfIn PDF document text
    • http://santecmb-sarl.com/transit_anna_seghers_buch_zusammenfassung616vc.pdfIn PDF document text
    • https://jovofodofipepij.weebly.com/uploads/1/3/2/6/132682866/fd8938.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/weather_report_today_in_goa.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/how_to_install_vinyl_stickers_on_a_car.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/lepobarobo.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/multisyllabic_rhyming_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/ripawefobibipejipixujubu.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/is_things_fall_apart_based_on_a_true_story.pdfIn 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_off0000fa39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA39 5196 bytes
SHA-256: 79c95bec6f1dcca05d1cbf8a8c6a764bbf0489c59ace2f884613474fdf6d6be5
font_01_sfnt_off00010bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCB 10848 bytes
SHA-256: 8d76ad663b93b64bd075e71c64cf57ed061d002bcf2c089dc1d4ad1dec49155c

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