Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4f642340dfeb0e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-03 13:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90439e4e099c5e1ae2798bf359e74aa1 SHA-1: bf37731282a08fa064f89415ac18dc3bdd8fb57b SHA-256: 7b4f642340dfeb0edb17cc746ed91886f305a3afa5a8db4574f41f5f5008f371
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and redirects users to malicious infrastructure, specifically `https://ttraff.cc/pify?keyword=periodic+table+crossword+puzzle+pdf`. This indicates a phishing or scam attempt disguised as a crossword puzzle. The presence of numerous external links, many pointing to Shopify domains, suggests an attempt to obscure the malicious redirector and potentially leverage SEO tactics. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=periodic+table+crossword+puzzle+pdf In PDF document text
    • http://files.emaankhawaja.com/uploads/1/3/1/4/131453405/vevoredotepi-rijejo-riruxodupid-sokumifa.pdfIn PDF document text
    • http://files.greenlightinspection.com/uploads/1/3/0/7/130739444/xesosoto.pdfIn PDF document text
    • http://files.christianmendozamusic.com/uploads/1/3/2/7/132741322/3492435.pdfIn PDF document text
    • http://files.colleeniversen.com/uploads/1/3/0/7/130739678/paxiwi-marewigiwulami-lozerasogutuwu.pdfIn PDF document text
    • http://files.berksauto.com/uploads/1/3/1/6/131637362/pazow_zufovoseta.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/1/0437/7581/9927/files/timex_alarm_clock_radio_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/67328193938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/48012329979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/satidufinutijagela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/rifoxupeveda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/73630289041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/vetimusisilitosiwiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/tedop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/77152751373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/46713642208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/30375699446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.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_off00006e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E60 5432 bytes
SHA-256: 8f6755cd8bf0360cca34ac9153a832437173b241daf1528a2f35d2611b0ef8d4
font_01_sfnt_off000080fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FE 10240 bytes
SHA-256: 7b0ce1aa323ed725fa0ce16c413fb62c98ad624a0cea733c3718de36de392a46

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