Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabf0b4803adc0a2…

MALICIOUS

PDF

80.8 KB Created: 2021-03-17 02:15:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d32a0bf7f685341102583bea19cab209 SHA-1: 37ce6db8a05055ab65497834c4a8f39146cbfb1d SHA-256: fabf0b4803adc0a2c6a2bffd93ff1f50e100dcc611b48bbec32cce19fddc9203
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to a '2007 suzuki xl7 repair manual free download'. The ML classifier and ClamAV detection strongly support its malicious nature, likely serving as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=2007+suzuki+xl7+repair+manual+free+download In PDF document text
    • https://static.s123-cdn-static.com/uploads/4445745/normal_5ffc5bb0d4ed7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484115/normal_6042c7032b1e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445877/normal_5fdfaaca2ab54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468572/normal_602e4dec3c53b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420014/normal_5fd731846c0f8.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/natupokasumajitaxa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479236/normal_5ff9e08fa5346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_6019849271fdc.pdfIn PDF document text
    • http://janafan.scienceontheweb.net/maytag_centennial_dryer_medc300bw0_not_heating.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493905/normal_6035cc9ace8c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426820/normal_5ff91e7a0c0b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483081/normal_6027594e661d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476930/normal_6009f0e2b6d1d.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/kuxegu/72081051058.pdfIn PDF document text
    • http://binuwuzipu.myartsonline.com/22732404465.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/empires_and_puzzles_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/caballo_de_troya_libro_opiniones.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/serexirazivubisupuwefug.pdfIn PDF document text
    • http://gozidonozali.myartsonline.com/craftsman_garage_door_decorative_hardware.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/18374490141.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/how_to_use_oven_for_baking_bread.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/nuwufalaguv.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/chemical_bonding_iit_jee_questions_with_answers.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_off0000fc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC75 5720 bytes
SHA-256: eaed4a683d05f7b0fc029ce0be008835c79b3118574295dcb416fdd636002e15
font_01_sfnt_off00011005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11005 11040 bytes
SHA-256: ac017ec6cc5227f056dcac2c5b58bd5a5697d98ae50373fccd4d8096cc9be6e2