Malicious PDF — malware analysis report

Static analysis result for SHA-256 e173a474fc57c3c9…

MALICIOUS

PDF

49.6 KB Created: 2020-07-31 12:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26fb722beab75dad83c05912964eb87a SHA-1: e9d022db26dfcbcda5d6c22a8ee70fb9378f7958 SHA-256: e173a474fc57c3c9f674dbbda493b4037ae91e4c959d9985bdcf64223cba5a94
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with numerous links pointing to Shopify-hosted PDFs, likely to manipulate search engine results and obscure the malicious intent. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector and link farm strongly suggests a phishing or malware delivery attempt.

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=metodos+de+pesquisa+qualitativa+pdf In PDF document text
    • http://files.jonesybc.com/uploads/1/3/2/6/132695301/tapiv.pdfIn PDF document text
    • http://files.thenewhoosierbroadcasters.com/uploads/1/3/1/0/131070230/4512121.pdfIn PDF document text
    • http://files.grsymphonicband.org/uploads/1/3/0/8/130874587/furexezigimegex.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/1/0430/8228/5216/files/mapagajukomusuzuguteguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/83223780145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/netipebitiwiwaluzav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/xixawukuvaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4119/2101/files/74794849041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/ferezetidapujulita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/51095936627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/buwosufamaguvik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/32266622971.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 1

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_off0000832c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832C 4908 bytes
SHA-256: f96201dbfbe9dc7e49b7fd75c6b1ffd9fd0ee7ffa4dfe67832d83ad440e01090
font_01_sfnt_off000093fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FE 11900 bytes
SHA-256: 36cf0fee718be74a18a10cb37c57c5d95c2d5dec026203b226f9ccc1b15171a7

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