Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86cdb415198a5bb…

MALICIOUS

PDF

38.8 KB Created: 2020-08-11 00:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff4f54566808acb4d24a244c39a737ef SHA-1: c6f21cc046d26727007978ede3431534be94db9e SHA-256: a86cdb415198a5bb4543ac05a04f0c24e2d69ffbfdd26abd830238e506b46b59
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, appears to contain references to PDF documents and URLs, consistent with a link farm or phishing lure. The presence of numerous embedded links, many pointing to Shopify domains, further supports the link farm heuristic.

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=pumping+and+aerial+apparatus+driver+operator+handbook+pdf In PDF document text
    • http://files.fullheartfoods.com/uploads/1/3/1/1/131164418/2df2c7ee31482.pdfIn PDF document text
    • http://tukimuk.herovision.ca/uploads/1/3/1/4/131483281/bisigamavo-fudawaxesiw-bupaxotus.pdfIn PDF document text
    • http://zuled.whitelakeholidayresort.com/uploads/1/3/1/1/131164250/4697247.pdfIn PDF document text
    • http://files.canyonridgepta.org/uploads/1/3/0/7/130775952/volalebekuzujuj.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/1/0438/4368/2469/files/xikusaforuzorotokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/97545461711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6686/7362/files/gopuladokeponewexesar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/joxiduko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/23509444157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/gakebeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/76915210082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/navatanomodalikim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/75943931633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/ray_optics_for_iit_jee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7548/5339/files/74042019641.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 3

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_off000057a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A2 5720 bytes
SHA-256: b7f7ced29d8c2599a0a1933a1740afe027d04e39f04dcdd75e2cbf747628a9d0
font_01_sfnt_off00006ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE4 10196 bytes
SHA-256: db894ac4207e95a5bac7eb32dab9977cc8727503fe77b162a6829196e16f55f4

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