Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a1b6d211eeab77…

MALICIOUS

PDF

69.7 KB Created: 2020-11-25 07:34:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cbae65c0cfbdafe2c4f344ec24974200 SHA-1: 139d8ffd323f9e758596daa82e0fd8e6673abb9a SHA-256: 15a1b6d211eeab77470075554470b139a56cbab7626613f658007d457741536b
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to redirect users to malicious sites. One of the primary external URIs points to 'traffnew.ru', which is likely a phishing or malware distribution domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=west+des+moines+soccer+club+west+des+moines+ia PDF link annotation
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/6226939.pdfIn PDF document text
    • https://savumolakom.weebly.com/uploads/1/3/4/6/134617738/vopalisawemala_lalom_welita.pdfIn PDF document text
    • https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/436ef.pdfIn PDF document text
    • https://xiwujanif.weebly.com/uploads/1/3/4/7/134705994/jofutonenogaj-fodudiru-rujoli-ripirok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412773/normal_5fa0b055bd17c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_5f950d14d77ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/672b641f-8f58-4903-bfe7-0812c5ceb84f/4924793669.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/41339050480.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/19351534696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e45c67-6793-48e7-bd2b-9bc9e98d9103/78564584083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93222913-936a-4a4c-baea-b906f770c342/888-276-5255__-4643.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/ford_transit_2020_order_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/complex_number_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/surusetikadesiwigobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a1904df-25c2-44b8-be3e-eeb46df368e0/ark_mobile_guide_reddit.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_off0000cf94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF94 5328 bytes
SHA-256: 7da55d503d5085496b2f8a639c5addc7c8fd671f6bc3869995466d21e6b7d3c2
font_01_sfnt_off0000e1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AF 12288 bytes
SHA-256: d163312bb722ee96222588d04835d9228fefdd5872e94786c706295bf8015bfd

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