Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a00eb92801142e…

MALICIOUS

PDF

46.7 KB Created: 2020-08-07 15:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dece6f305517961ffd52a1d0e8a8bb0e SHA-1: 2c22ef8e21610a2350493451d847180dca602e3c SHA-256: 55a00eb92801142ed1fcee78b60889b584160232c7d375ce75d83cd89c8d599d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a tutorial. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=vue+js+tutorialspoint+pdf In PDF document text
    • http://files.pusatbazaar.com/uploads/1/3/0/7/130738569/7775537.pdfIn PDF document text
    • http://files.extraontop.com/uploads/1/3/2/6/132681229/9e9297b1.pdfIn PDF document text
    • http://files.counterviolenceusa.com/uploads/1/3/1/3/131398054/899147.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/26237315173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12457093378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/79073828888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/40195097527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/adobe_audition_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/13081239411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/28301338460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/25538878034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/42652279033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/2121871249.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7C 4956 bytes
SHA-256: 8aea5ef8dc9455cba8e877aa53ea37d4c0c8dd043683475e3d0ae9d0f45a5f92
font_01_sfnt_off00007069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7069 15404 bytes
SHA-256: e00141b96ad0c6aa9295e08288fa1a01b0eba26ef861b801d41624add0f7c478
font_02_sfnt_off0000a00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA00E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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