Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6dcd51669e4382d…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 09:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8c3feacef0e95d5e8f806c992655833 SHA-1: f63ef4dd5fddb94ab1eef463ccf55e71da045b0f SHA-256: f6dcd51669e4382d8f114e2d928547fcae962fb46f85130e53194c057007546c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=gold+star+chili+application+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility. The ML classifier also strongly flagged this PDF as malicious.

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=gold+star+chili+application+pdf In PDF document text
    • http://files.annabujak.net/uploads/1/3/1/6/131636954/lukikomolobutav-dafomajejopim-remomodinavepe.pdfIn PDF document text
    • http://wuxaj.stellasartgallery.com/uploads/1/3/1/6/131606346/9626637.pdfIn PDF document text
    • http://files.truthfulart.com/uploads/1/3/0/8/130874411/595672.pdfIn PDF document text
    • http://files.pennsburydrama.com/uploads/1/3/0/7/130776401/4472202.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/1/0428/0070/9791/files/tamebopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/sojukixafumanezototir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/39466407396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/99771447376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/20290443242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0389/9048/files/how_to_use_notsobot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/xavubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/alien_registration_number_f1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/87370075096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/ukulele_campfire_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/zebokoridagesapevaxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/22976411256.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_off00006140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6140 5272 bytes
SHA-256: 95e54b8b727a6d59b79a1adc81933968194c18d13d3f3fe9daf80eb84e62547d
font_01_sfnt_off0000732c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 12508 bytes
SHA-256: 77f295378d8ff6dc6a35ae1372e98a1924bcf8a17d84580bc93c9546652db704

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