Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb920c1468c899e…

MALICIOUS

PDF

140.7 KB Created: 2020-08-06 14:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad02e1fce53a7ad503a32ea3424d3214 SHA-1: c2b79dd9c34eaa5117c40ceccdf8cd969338e7eb SHA-256: 3fb920c1468c899eee6ec35052bee5c510483b5b3bae3a51bdd935c824a257e2
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to trick users into visiting a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for 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=chemotherapy+definition+pdf In PDF document text
    • http://files.maasaifit.com/uploads/1/3/1/4/131455475/7e27eb02.pdfIn PDF document text
    • http://files.unityphilly.org/uploads/1/3/1/0/131071114/puseferekev.pdfIn PDF document text
    • http://files.dbblue.com/uploads/1/3/0/7/130776499/68c11f6bc5.pdfIn PDF document text
    • http://files.lutzka.com/uploads/1/3/1/0/131069781/bidit-xemojegatopufir-defifexe.pdfIn PDF document text
    • http://files.neverquitneverdie.org/uploads/1/3/1/1/131163838/fodezutiwusidukow.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/1/0430/9948/8410/files/73026952706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9322/0766/files/porefute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/73409099866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/jopade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/14316982622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/ford_explorer_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/18905389831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/wubovoxuzadukebivokol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/82170864158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/57695695678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/2480898912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/fuzodikiloni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/zegijagizijuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/wolifomomudawaw.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001eea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EEA1 5076 bytes
SHA-256: b56fba39296087b0832804cd8513d0b620f4997fc4fad7c604f6f4ea560849c6
font_01_sfnt_off0001ffc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FFC0 10760 bytes
SHA-256: 6599296c5b405749045b2a13fc4d73946ab98eed4340b370931715ac4e6a81cf