Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f59073b6c3d3b84…

MALICIOUS

PDF

60.8 KB Created: 2020-08-01 16:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e069e958d78a91704a1ee4cdfce1cad SHA-1: 8cb852c04802465194faff7acd10695eaf3717f9 SHA-256: 3f59073b6c3d3b84896cc0ae859c53e5272ac21d6a8e416b44de35234524bd4c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised as a survey of accounting. This indicates a phishing or scam attempt to lure users to malicious infrastructure. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector.

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=survey+of+accounting+7th+edition+pdf In PDF document text
    • http://files.jessicacarey.co/uploads/1/3/2/6/132682822/4228178.pdfIn PDF document text
    • http://files.coricosmeticsinc.com/uploads/1/3/1/8/131855992/papalomageve-sepanisugabi-zadolewej.pdfIn PDF document text
    • http://files.zoroastriankids.com/uploads/1/3/1/3/131378899/dc3df55cf40661.pdfIn PDF document text
    • http://files.wilmingtonprintandmail.com/uploads/1/3/1/6/131637057/cd8bc305482.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/1/0430/8569/3079/files/90260356214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/vudasukun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6588/5351/files/46070909985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6934/0822/files/22206451057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/62408701917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/55404894450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/2895693769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/waxewowidapaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/32205953159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/94159358276.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 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_off0000acfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACFB 5552 bytes
SHA-256: 7ca50860adac65a780d51b0dfa495a3c9ad59a7e008e40da0aded5f056eeb398
font_01_sfnt_off0000bff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF2 10876 bytes
SHA-256: bc8a2c083452062a664e964e6d6fecb0e45ba39cd3a788de968f9e79f5eca11d

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