Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2a457825327b59…

MALICIOUS

PDF

44.9 KB Created: 2020-08-15 11:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c6783442887e519349f7a80c3e83c63 SHA-1: fe48b6f4768cb3a914089447a13c66f5ff3100fc SHA-256: ad2a457825327b5996f6692358a84735123dc138df20f984bb5cc32199a8d77f
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.com/wb?keyword=trig%20table%20of%20values%20pdf'. The document body, though heavily obfuscated, contains text related to 'trig table of values pdf', suggesting a lure to disguise the malicious intent. The presence of numerous other links, many pointing to benign Shopify URLs, indicates a link farm strategy to obscure the malicious destination.

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/wb?keyword=trig%20table%20of%20values%20pdf In PDF document text
    • http://files.cdcatparker.com/uploads/1/3/1/4/131437886/gukebizerivajijafep.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/1/0433/6284/4837/files/dugopolski_trigonometry_4th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/75027139847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6327/0815/files/17821564833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2374/4674/files/2d_animation_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/78858980797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/15036813013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/three_letter_usernames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2438/2114/files/14273795145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5382/files/58156395235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3605/2389/files/beltron_deo_syllabus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/sasivefuvudejisem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/vovakidesegovojerapanigiw.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00005c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C77 5360 bytes
SHA-256: 314ebee1a48af2879c8a19903294d7c42e99ae4d73bbb39b239391477921a6d7
font_01_sfnt_off00006ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBC 10104 bytes
SHA-256: 275b66902053d29168f580c18d6e68085f7dcc7a366d378c1b2b276165f23b57
font_02_sfnt_off0000919c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x919C 16152 bytes
SHA-256: 9dd161ad083bde31f1785977080a21cd00ffd1d65af7312c0685ba069ea0c2ef

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