Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32df533c614afb1…

MALICIOUS

PDF

69.5 KB Created: 2020-12-07 21:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2e33b95520051bbbe5ddbdcd30f9644f SHA-1: 14d4caa8733b03c46fde79a0689969335f04e3a1 SHA-256: d32df533c614afb1c6e19e316b83f753d959661a228eccabab25b02444454ff7
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://traffking.ru/strik?utm_term=idle+supermarket+tycoon+money+scale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454052/normal_5fabe982bd1df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_5fb471d01d4ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372355/normal_5f8c813277ae3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5f9fabc4d8dff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5f87308d27638.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f954df18b9bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502246/normal_5fad81b91b9df.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/6391395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481163/normal_5faf69e733c3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5faf0a315594d.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/c55f8e92-9629-4dae-83d1-7ac3be3a41ca/horizontal_wall_bed_kit.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_off0000c799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC799 5324 bytes
SHA-256: 5c1e4132a46b6dd64e3c6016ae336a0184ccb1853bf2891881056d2f70610e4f
font_01_sfnt_off0000d99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99B 1832 bytes
SHA-256: 886313929a2a840396a9efe1236b0f91371ac8de8ce80438e8dc898f1383658c
font_02_sfnt_off0000e29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29B 11304 bytes
SHA-256: 9cd4c6f2304a85d49dd8ddaa665db664b8bdef6bd68e955f2333f7422712acdf

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