Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ca2764eb0ef746…

MALICIOUS

PDF

39.5 KB Created: 2020-08-15 08:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f85365fd942fb58925a41cb3596de70a SHA-1: 72aa9124603bf3a6167909e223757ae08e4f9d05 SHA-256: f8ca2764eb0ef746b870645043fff602a3c25c8d8e9487ba1195eac795636a9d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a large number of embedded links, including a critical finding of a malicious redirector pointing to 'https://ttraff.com/pify?keyword=captivate+instagram+android'. The document also exhibits characteristics of a PDF SEO link farm, with numerous links to benign Shopify domains, likely to inflate search engine rankings or distribute traffic. The presence of urgency language further suggests a lure to entice users to click on these links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=captivate+instagram+android In PDF document text
    • http://files.worldfashionmedianewsarchives.com/uploads/1/3/1/3/131379678/7336342.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/1/0434/3427/9062/files/45077045614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/46509816316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/18035540146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/zalafiviluzixixeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/actuarial_mathematics_for_life_contingent_risks_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/sulasobir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/suwet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/state_the_advantages_of_partnership_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/94194534934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/mixejigapukaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/minecraft_2shared_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/73727203909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3279/7607/files/79310439118.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 2

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_off00005d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D67 5212 bytes
SHA-256: cd2f4be3011e91637d28da363378a0e1261ebd0d151e022ae36ead5c4b85c307
font_01_sfnt_off00006f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0E 10036 bytes
SHA-256: 2533527bbc3c5dd72d1e834b36ac0448b8a7f087f63c51b8edddd8de0a03acde

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