Malicious PDF — malware analysis report

Static analysis result for SHA-256 335969a145cc01bc…

MALICIOUS

PDF

48.0 KB Created: 2020-07-29 12:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1665e555a06d8f31765b0f3610ead776 SHA-1: c0593b5a66c2cf376ca69cc0389709d834926f13 SHA-256: 335969a145cc01bc5122d9c398b2ed4b1d227d59017f8297713e85be7f7846aa
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.cc'. This indicates the document is designed to redirect users to malicious sites. The presence of a large number of external PDF links, many hosted on Shopify, further suggests a link farm or SEO poisoning tactic to attract victims. 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=beginner+gym+workout+pdf In PDF document text
    • http://files.kobasfourpawsinstitute.com/uploads/1/3/1/1/131164067/549698.pdfIn PDF document text
    • http://files.drmrosenfeld.com/uploads/1/3/1/4/131406430/zipeduxumuf-rowezeki.pdfIn PDF document text
    • http://files.chugiakdogmushers.com/uploads/1/3/1/3/131379443/katofudivevok-rusiremof-lixakikok.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/1/0431/7505/1421/files/75357895820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4735/2480/files/radidoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/wakotizupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/76433859569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2707/8042/files/putobewawibom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/57477865452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/zopuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/11237025601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1474/1413/files/ludepapixodedarawawabakod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/nerodupijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/pegope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/49517851341.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 7

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_off00007e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1C 5132 bytes
SHA-256: b593a4e6709ace0329709ef53822ddecbcc8ce17eee52aa843b1f3f2a301ca58
font_01_sfnt_off00008f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F96 10412 bytes
SHA-256: 0dda8e9bf3da9c99064231d35e332cea02155c275f67e11da544d30ab101b579

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