Malicious PDF — malware analysis report

Static analysis result for SHA-256 f51087d5dc012a28…

MALICIOUS

PDF

40.9 KB Created: 2020-07-30 09:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0698f8166105d75fcd81d73ed6becd10 SHA-1: 504bca3929a3918b4c359b195071a8ef3f3f86ab SHA-256: f51087d5dc012a28123455405a495be36c8e5e94b5975de0970d00ed8f5c15d7
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 pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, one of which leads to a Shopify domain. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to a malicious URL, likely for phishing or to download further malicious content.

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=birsen+yay%25C4%25B1nevi+sap2020+pdf In PDF document text
    • http://files.lavenderbluevintagedesigns.com/uploads/1/3/0/8/130874029/8158420.pdfIn PDF document text
    • http://files.rotterdamenglishspeakingtheatre.nl/uploads/1/3/1/4/131452735/dujigowalu_sewugumibafek_gomoxesorita_rutijoxe.pdfIn PDF document text
    • http://files.sallyarnold.com/uploads/1/3/1/6/131606480/06a5f8.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/1/0434/1222/6200/files/96685476752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/65407077468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8219/4852/files/20141812030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0855/6182/files/pitodibizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/43381599423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1117/7626/files/18631950145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1721/4874/files/todavekomozafutobuwuxega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9334/4924/files/684777890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/15894794906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/42230999061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.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_off00005e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E75 5116 bytes
SHA-256: e0ec78f2166e40c21d6963754aa7b54d63e494fd731541a95e6e628330962b7e
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 11812 bytes
SHA-256: 6ea6d1eca2e1ec3fb09a3fe55c49e7e123a3c49433a30c09f72a813120d60a25

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