Malicious PDF — malware analysis report

Static analysis result for SHA-256 670475ebd4a2e1ff…

MALICIOUS

PDF

113.7 KB Created: 2020-08-05 13:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73b0ef5edc583024ad1d5030173b30fb SHA-1: 8f685689a441bdd0c31f8396b2e922f55f39ec19 SHA-256: 670475ebd4a2e1ff51f50ab230d204b89bf768fe8c18ae04640ffc57bc7e6e47
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to SEO redirectors. The primary redirector URL, 'https://ttraff.cc/pify?keyword=awk+tutorial+linux+pdf', is flagged as malicious. This indicates a likely attempt to lure users to a malicious site, potentially for phishing or to download further malware. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent.

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=awk+tutorial+linux+pdf In PDF document text
    • http://files.fernturnerhair.com/uploads/1/3/1/3/131381006/zofudufekuw_wirode.pdfIn PDF document text
    • http://ruvurupi.gastrocycling.com/uploads/1/3/1/3/131380485/muzepasebez.pdfIn PDF document text
    • http://files.kathrynchristianmusic.com/uploads/1/3/1/4/131437457/6872130.pdfIn PDF document text
    • http://ribifa.goldcountry-realestate.com/uploads/1/3/0/8/130813765/nexezar-nusivepiv-bukumelabafipi.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/1/0428/9835/8432/files/84312174386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/fuloluluzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/74085470189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/71704738596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/majagipiposodete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/52422234182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/clinical_pharmacy_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/25824878737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/47868043876.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 6

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_off00017543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17543 5068 bytes
SHA-256: 2c0b52ce7e5039d12dc3e383b0bb02f206fcd3a83ce6e46a71169504509b1eca
font_01_sfnt_off000186ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186AE 16196 bytes
SHA-256: c1647a5cbe3348f6e0c147a17d2845974461f917b31601aa216ac914717aaf80

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