Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7bb85eab567c9cf…

MALICIOUS

PDF

49.2 KB Created: 2020-07-29 18:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d34cf20ebd0205e277c5d4bff674ec0d SHA-1: ec3804c94a63f1afeed161d09ea97f9bd09fc3b9 SHA-256: a7bb85eab567c9cf8d8b9dcb7a8d44f61b498d6a2aed1240986aed9bf2e4c774
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The ML classifier strongly flagged this sample as malicious. The document body, though heavily obfuscated, appears to be related to 'cours agriculture urbaine pdf', likely a lure. The presence of numerous external PDF links suggests a link farm or redirection strategy to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.com/pify?keyword=cours+agriculture+urbaine+pdf In PDF document text
    • http://files.counseling4success.com/uploads/1/3/1/0/131069869/1b840.pdfIn PDF document text
    • http://files.theroute92.com/uploads/1/3/1/4/131410012/3484041.pdfIn PDF document text
    • http://files.cathyrogersart.com/uploads/1/3/1/8/131856163/fapid_wewinufakut.pdfIn PDF document text
    • http://files.theneoneffect.com.au/uploads/1/3/0/7/130738764/8579411.pdfIn PDF document text
    • http://files.footlightstheater.com/uploads/1/3/2/6/132681878/5fe0841f1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4459/1000/files/78622016082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/kulobedifez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0994/9341/files/bapivuvevog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/roforafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rikujolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/bowoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/57052122583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8248/9762/files/notukaporowunuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/46487730539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/redojuvejom.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 5368 bytes
SHA-256: 47bba95a157678a6b10113226d4703c951c88f24e16997846d369c0a9ef08806
font_01_sfnt_off00008ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED7 12880 bytes
SHA-256: 32a989101598da598a6f58684a3ebc3a9b2906ab3073794426e69d9e717524bd

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