Malicious PDF — malware analysis report

Static analysis result for SHA-256 8032b964fc3f3029…

MALICIOUS

PDF

80.0 KB Created: 2021-01-08 07:36:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 696167958ecfb6669357ef3893a5b649 SHA-1: 98ded607907d4eb6882846406b1eebc97b3ca758 SHA-256: 8032b964fc3f3029a049d79997b570400ef05778c1f75b8f4f01f16b77e74136
252 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of embedded links, many pointing to redirector infrastructure, including a critical finding of a link to 'traffking.ru'. The document body, though heavily obfuscated, suggests a lure related to 'bittorrent movies free websites', indicating a phishing or scam attempt. The presence of numerous links and the redirector URL strongly suggest this document is designed to lead users to malicious sites, potentially for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=bittorrent+movies+free++websites In PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/digufozaloladegufa.pdfIn PDF document text
    • https://lelunoforonu.weebly.com/uploads/1/3/1/6/131606056/gilutanom.pdfIn PDF document text
    • https://cdn.sqhk.co/semejegofip/ThfFhcY/rinegipofowutajizepoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449974/normal_5fe20d62178e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380209/normal_5f8bdceb906ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388426/normal_5fe9e310b6514.pdfIn PDF document text
    • https://mufikufit.weebly.com/uploads/1/3/4/7/134766202/5315365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f8750df65ba3.pdfIn PDF document text
    • https://cdn.sqhk.co/xomifinetepi/jjjhgi0/72202409183.pdfIn PDF document text
    • https://wojemedirok.weebly.com/uploads/1/3/4/7/134724763/4442260.pdfIn PDF document text
    • https://rujupiben.weebly.com/uploads/1/3/4/8/134852491/43c59135a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470223/normal_5fc701327f034.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/jikUhgj/88701131090.pdfIn PDF document text
    • https://jokatilowiwege.weebly.com/uploads/1/3/4/3/134369617/adeaa45c546a60.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/jujojomojemiz/wpf_itemscontrol_itemtemplate_style.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/chm_file_sample.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_off0000fda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA6 5012 bytes
SHA-256: 3c5ffb206cd264a47c7816b0d697f379f40fdc9b9e82cad86c4a7020aacac7a2
font_01_sfnt_off00010eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB7 10576 bytes
SHA-256: b4a8c67662d90d13d1f51718a7083b6c46436fde05c3afc4dc7c47c27f2ec016