Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec534842a09f7776…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 19:57:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a510205d49effd7b198af58ee70f83b8 SHA-1: f74c25278a45d67169cee842e55f4e11b352db5f SHA-256: ec534842a09f7776d9850a714cf04037a417f5655d8bcf93d5325d603f9579e0
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'British accent pronunciation software free' and the malicious URL. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary attack vector appears to be luring the user to the malicious redirector.

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=british+accent+pronunciation+software+free In PDF document text
    • http://rawidebo.porterbuiltaz.com/uploads/1/3/2/8/132814930/9f8487.pdfIn PDF document text
    • http://files.readmoredaily.com/uploads/1/3/0/7/130740625/deriteso.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/1/0431/8615/9767/files/18939516116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/traumatismo_abdominal_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4659/1903/files/wutovobitusati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/83737389630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/7030907262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/nupuvijomodibefol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/76395478159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/calculus_single_and_multivariable_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/nys_dealer_mv_82.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/probiotics_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/jewidobin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/watermelon_man_herbie_hancock_sheet_music.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_off000063e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 5212 bytes
SHA-256: c1f5b6c6f050fb8b37b56320a94096776ea4bf96c2721d14fb19f21c234d315f
font_01_sfnt_off000075a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A9 10740 bytes
SHA-256: 99bdae1edbc013c4c91fc59c06b8a6e1194600768be48cf6355d068c0cb2bd25

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