Malicious PDF — malware analysis report

Static analysis result for SHA-256 6566e3af51201cc5…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 23:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02f60daea3bddc4473869d0accc420a4 SHA-1: 80e293c2bde9a73764895ff0034f4308b3a0e9b3 SHA-256: 6566e3af51201cc5a1a6f2adae7f3f5bd97cf8f6b39bc0b1b4b66fdfe8443b29
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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=the+odyssey+book+10+pdf In PDF document text
    • http://nixovudad.kinsellamitchell.com/uploads/1/3/1/4/131437513/7109614.pdfIn PDF document text
    • http://files.euacademycs.org/uploads/1/3/0/8/130873941/mukujujipagegef.pdfIn PDF document text
    • http://files.yoloenergywatch.org/uploads/1/3/0/7/130775677/xewari_bimarapon_buvefelulasok.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/1/0440/4881/0149/files/mazopavuteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/biriwusotisokif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/xibudiwidowevelurilefexuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/ashrae_handbook_of_fundamentals_1997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9359/0170/files/72199975695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9028/0609/files/xaraxomizebulexoxademe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/neroganukujegusatenab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/nifusademonuwokomakizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0446/8134/files/wokedegadupuvidow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/pixumumatejiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/advanced_english_practice_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/nilifukuvabufebewumegeze.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 4

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_off00007d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8B 5240 bytes
SHA-256: 3c2a1f25f63bba311aa421f34a6cf29171787bdc296281ddd9b95f0239afd38a
font_01_sfnt_off00008f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6F 10436 bytes
SHA-256: 6ce4ea40f1c93b802fd509bbceb2e679534240aaac877905b8e7b8e9a6e1fdd1

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