Malicious PDF — malware analysis report

Static analysis result for SHA-256 48027c388c9039c7…

MALICIOUS

PDF

111.5 KB Created: 2020-11-13 08:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6c37e0c67e936cfca4497c7387537d10 SHA-1: 17287397192ab212725594711a9207680ebcca5c SHA-256: 48027c388c9039c792c37cdabf5a7260a68bd440882ca970ae53302a8d38b2a8
156 Risk Score

Malware Insights

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

This PDF document contains numerous external links, a common tactic for SEO link farms and phishing. The primary malicious URL, traffnew.ru, is likely used to redirect users to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=barreau+qu%25C3%25A9bec+formation+professionnelle PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8b2eb77a6f7.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/vexilaxowiro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f893bb2c9701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391920/normal_5f8fe08a97b8b.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/ee736b022.pdfIn PDF document text
    • https://kelipibefis.weebly.com/uploads/1/3/4/5/134500531/06bd35c96a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_5fa569267c059.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/6b04d184-f619-4b41-95ba-795c6c534780/2143523941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/231c3ec2-a340-4ae4-8ca8-6e87360043c6/fekunedixakexuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b2f347d-89f5-4961-bfd3-131e41e0520b/zekirupejalajarumodewarit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e1395c1-8805-44cd-9804-ed221b8dfd64/chapter_15_summary_of_the_hunger_games.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001524e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1524E 5616 bytes
SHA-256: d470d01600796140092a3ec8eed3cb7c1badc38d943189151b4f2e949fdc3610
font_01_sfnt_off00016510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16510 17712 bytes
SHA-256: a80ca2baacf8eee6da39940ca2dd35636e29020a2be421e5a6cc693b2db7c715
font_02_sfnt_off000198ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x198EF 16176 bytes
SHA-256: 5a182865c3776422cb8bcaf07e49966518a48e0b937264574860b0c9c6edfb11

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