Malicious PDF — malware analysis report

Static analysis result for SHA-256 f329061a6e874980…

MALICIOUS

PDF

84.4 KB Created: 2021-01-17 21:33:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 577ccaebde12eb98cb20f3da84e9f52c SHA-1: 72809657b310855b65bd96ee3b74386611f22685 SHA-256: f329061a6e874980688df670cbe858df1c80f02d027184b9848bb3abf1315aa3
214 Risk Score

Malware Insights

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

The file is a PDF containing numerous embedded links, with critical heuristics indicating it's a malicious redirector and part of a link farm. One critical heuristic specifically flags a link to 'traffking.ru' as known malicious redirector infrastructure. The ML classifier and ClamAV detection further support its malicious nature. The embedded links likely serve to lure users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • 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://traffking.ru/123?utm_term=van+der+waals+constant+b+is+maximum+for In PDF document text
    • https://wedufejaf.weebly.com/uploads/1/3/4/0/134018106/fa7e0ff71.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/9cde355be2.pdfIn PDF document text
    • https://gumewixolasadaz.weebly.com/uploads/1/3/4/6/134659592/1589713.pdfIn PDF document text
    • http://mefizilexofe.66ghz.com/what_is_a_push_notifications_android.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/ee7fb8.pdfIn PDF document text
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/2269886.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://litopuputorer.rf.gd/fusiform_aneurysm_iliac_artery.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/xunumazodazodov.pdfIn PDF document text
    • http://suwuxuk.epizy.com/sanizes.pdfIn PDF document text
    • http://surobufalinaxis.epizy.com/58121762902.pdfIn PDF document text
    • http://noxikemudenuma.epizy.com/childbirth_delivery_videos_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/auxiliary_view_drawing.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/83539810719.pdfIn PDF document text
    • http://kisolapuri.rf.gd/tifiru.pdfIn PDF document text
    • http://buwanizun.epizy.com/enterprise_risk_management_assessment_template.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/78786286931.pdfIn PDF document text
    • http://talagolow.rf.gd/womofolor.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/itunes_card_generator_no_human_verification.pdfIn PDF document text
    • http://jolasesiv.epizy.com/18862956382.pdfIn PDF document text
    • http://dixuzudes.epizy.com/cusat_question_papers_with_answers.pdfIn PDF document text
    • http://xesidif.epizy.com/level_80_boost_gw2_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/usage_of_articles_in_english_grammar_worksheets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8C 5316 bytes
SHA-256: 45d91bf891b8a4cf03c0808ae25da85b284393a3a36b24110a9aecd290839fca
font_01_sfnt_off00010c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C95 12156 bytes
SHA-256: ed51d5aca40faea5cbacbad296cc1fbac5347304da88f3e8f941c8ecb9487976
font_02_sfnt_off0001354f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1354F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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