Malicious PDF — malware analysis report

Static analysis result for SHA-256 81e7478d54a8e664…

MALICIOUS

PDF

45.6 KB Created: 2020-07-31 00:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62018e7ee7be09563808fd409c541d4f SHA-1: 4ad8ca0f2243786e36895805fac0c9af4cd0eef6 SHA-256: 81e7478d54a8e6644109b2cc5eed3bf8ff3b81f9ae1a44e5d8bd24f5800c820c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links to a redirector service (ttraff.cc) which is flagged as malicious. It also hosts a large number of external PDF links, many on Shopify, suggesting an SEO link farm or phishing lure. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the embedded links and heuristic firings point to a malicious redirector and potential phishing campaign.

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=les+fleurs+du+mal+r%25C3%25A9sum%25C3%25A9+court+pdf In PDF document text
    • http://files.farmviabilityconference.com/uploads/1/3/0/8/130814225/f40784d9562fc8.pdfIn PDF document text
    • http://files.crescentbaydollfanciers.com/uploads/1/3/2/6/132695492/aad70.pdfIn PDF document text
    • http://files.occmedfordcs.com/uploads/1/3/1/4/131453045/refufopiwoxenegitu.pdfIn PDF document text
    • http://files.adentausa.com/uploads/1/3/2/6/132696063/6743072.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/1/0434/2834/8056/files/piwuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/28116228289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/mulegilojol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/31389817139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1666/4734/files/temezeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/napopanoxixukow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/40987441718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/467689007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/jevinofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/66828430370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/27253786772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/daviku.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
🗂 Part of campaign: crescentbaydollfanciers.com 4 samples

Related samples 8

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_off0000705b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705B 5112 bytes
SHA-256: 95610e0d17f628ff637314e3e0cb6f81167a14afda4dd7412ba0a7182addc33b
font_01_sfnt_off00008175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 11960 bytes
SHA-256: 7cb36288d6afb9a793991ff83350a108391364729f83a696e1f82103d40ee912

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