Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c8adfb70b5bf6c…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 07:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ee60fb4d494c80f038cc5b564231acc SHA-1: f8127d40c72c5b883b7cf8b4950662daa82674fc SHA-256: 16c8adfb70b5bf6c400ca927f358358ae69df170fa9a9b6906a4a9a1a94dfb49
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, specifically pointing to 'ttraff.com' as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=articles+in+german+language+pdf' and numerous other PDF links, suggesting a lure to download further content. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=articles+in+german+language+pdf In PDF document text
    • http://morobun.townofwise.net/uploads/1/3/1/8/131871721/vetenufo.pdfIn PDF document text
    • http://wozilit.seah.space/uploads/1/3/1/4/131453870/308d0875bd.pdfIn PDF document text
    • http://noveki.tournoidevignoles.com/uploads/1/3/1/3/131383483/nujuxavulu.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/1/0434/0305/1171/files/95493239227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5055/6821/files/mawiposesozapaderenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/vagozebab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kebiwubinixakagaxirefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/pofifidarowaxupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7345/files/fedafaselawape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/scuffham_s-_gear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/rakigogepuwepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/tewekonimukafimenegasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/xixunexujatinasebejewexag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/vigotimobasoxujuzaxomow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1955/files/hilary_s_necklace_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1161/0520/files/resignation_letter_sample_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.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 2

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_off00006716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6716 5464 bytes
SHA-256: 9e42e65cb33ecac401d7dea3a5537d52470976ddeb1bdd3c3fb3c6e452bada92
font_01_sfnt_off00007994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7994 9668 bytes
SHA-256: 014db1f5b586aadf3c09816f76ffc391c1435e0b1d1a45a3eb5c3093c1e8825f

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