Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef40b492bd1952d…

MALICIOUS

PDF

39.2 KB Created: 2020-08-04 18:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afd9de974e158a9b0cfca8fb699fe30a SHA-1: 91b676c3c809434ffa10f5ab246b3d01605f7fec SHA-256: 0ef40b492bd1952d3995b0602c8868c2b21257293454ff991ff1787a32746d77
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a malicious redirector, identified as 'ttraff.cc'. This redirector is likely used to obscure the final destination and potentially deliver a malicious payload. The document body, though partially corrupted, suggests an attempt to masquerade as an educational resource to entice users to click the malicious link. No scripts were extracted, but the presence of malicious redirector links and the ML classification strongly indicate a phishing or malware distribution attempt.

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.cc/pify?keyword=exercice+verbe+etre+et+avoir+au+pr%25C3%25A9sent+pdf In PDF document text
    • http://files.blondiesboutiqueshop.com/uploads/1/3/1/3/131384468/b65c2f47d4f6.pdfIn PDF document text
    • http://files.prime-peak.com/uploads/1/3/0/7/130775518/jibasaj_kaluwoje_nagop_fakeremuv.pdfIn PDF document text
    • http://rolofajuw.stnicholaschurch-shepperton.org/uploads/1/3/2/6/132682327/5715403.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/1/0427/8976/5279/files/52180695239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5740/4318/files/52199346737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/wisutunerepipometazoveduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/tirokiginikivojijekure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/60687232429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2787/3440/files/sakedobizutapone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6117/files/82595349596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/komakuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2764/5095/files/mitosis_cell_cycle_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/roxofedezuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/24465752085.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 3

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_off000055ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55AC 5484 bytes
SHA-256: 86b22fe44264ee6c79b0e601b20c0210860b232c54649348f6e200be6f948dcb
font_01_sfnt_off0000682c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682C 11660 bytes
SHA-256: 83236009edd7105ded2c79d9f50a5e6899c33626f5d015a04f5d796e0bd54153

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