Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e07640ae29878f9…

MALICIOUS

PDF

84.5 KB Created: 2020-12-28 08:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e1211b3159d3492793c1548dff3159a SHA-1: 7ac4c5f79c78b252ea6d0f6bc5166e120c0c8568 SHA-256: 7e07640ae29878f95a7a7533272e5f42b2dae857a1bbfde6580dad0d18e355a6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=plataforma+areandina+canvas'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier and ClamAV also strongly indicate maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/aws?utm_term=plataforma+areandina+canvas
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5fa514cc0acc5.pdf
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f9ca99301dc9.pdf
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f9033137b266.pdf
    • https://static.s123-cdn-static.com/uploads/4451752/normal_5fc551b5ba3c5.pdf
    • https://cdn-cms.f-static.net/uploads/4393486/normal_5f9135422963f.pdf
    • https://cdn-cms.f-static.net/uploads/4453327/normal_5fa2b44926841.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0d60c141-60ce-4359-9ea6-b2ceca622de4/lovosisefazaduwewogaf.pdf
    • https://s3.amazonaws.com/nodetuxapabara/afscme_council_13_grievance_form.pdf
    • https://s3.amazonaws.com/rokuwapesu/nijovotuje.pdf
    • https://uploads.strikinglycdn.com/files/9f0132a2-14e1-4065-9bd0-5651e7570dc6/91703507572.pdf
    • https://uploads.strikinglycdn.com/files/e189251b-ce78-4fd3-8f02-0b295ff8c575/12599833423.pdf
    • https://uploads.strikinglycdn.com/files/5b03da99-07cd-49ad-9ca3-f0cd9ba2aafc/55013410015.pdf
    • https://uploads.strikinglycdn.com/files/a396daa8-59c5-419f-a9c3-19afb5fccf8c/discernimiento_que_es.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f60.bin
3b2455e566256fa81997c03c5dbe7db0dc98628ba0768666f4a61fea5f84fe0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F60 5228 bytes
font_01_sfnt_off00012120.bin
527bf61be930eaaf7b631736fcb960ec9d7a200a217ba008269c991a9a2ea5e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x12120 10768 bytes