Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1f861606df072f…

MALICIOUS

PDF

64.4 KB Created: 2020-08-26 17:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6362f168e966b04177d6d20adeb8160 SHA-1: de8c97c080c80cd0b699ecb8e044270c5f38ab36 SHA-256: df1f861606df072f5fbf9e51424ce3a670fd8871505075d6461b5eb7fa40cd3a
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a large number of external links, many pointing to Shopify-hosted PDFs, indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which likely serves as a lure or initial stage for further malicious activity. The document body, though heavily obfuscated, contains the same redirector URL and other PDF links.

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=mass+effect+character+import In PDF document text
    • http://files.diogenpro.com/uploads/1/3/0/7/130775528/lapolarevobukofofux.pdfIn PDF document text
    • http://files.marinasouthpiermural2015.com/uploads/1/3/1/4/131407921/459456.pdfIn PDF document text
    • http://nukuzu.reluctant-traveller.co.uk/uploads/1/3/1/4/131454237/rumos_xuxutulape_dasigobejuma.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/1/0434/4361/7958/files/barney_stinson_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2017/2957/files/xonesukefigivovufafununus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/74172994183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3808/0166/files/17302200038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4516/2903/files/hamster_face_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7138/1405/files/powerpoint_templates_free_2019_microsoft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/malafegowegijodevenabom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/86448374963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/ruwemowagububer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/xakorigapopad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4111/8618/files/honeywell_fan_heater_manual.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_off0000b8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8DB 5228 bytes
SHA-256: 9cf784ebe26f2dd5fe75fa10b964c573424c497eb51a0cec93a6aa38b28ddaf4
font_01_sfnt_off0000ca7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7D 12644 bytes
SHA-256: 5f6735fc3bef9aec5c99ab6e287c813087ad354d0897dc814ad0d6ca17634237

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