Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d686a7973b24e1…

MALICIOUS

PDF

41.9 KB Created: 2020-08-26 23:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c58daea5b16700942499557ac54db097 SHA-1: 69035ab7f544964e9e6c140a6503bdd0388dba3d SHA-256: 33d686a7973b24e1ebef4bb568ae086f5e380b5f895d210c8c0cf92064325dd1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector (ttraff.com) that leads to adult content. This suggests a lure-based attack, potentially for phishing or malware distribution. The PDF also features a link farm hosted on Shopify, which is unusual and may be an attempt to obscure malicious intent. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a malicious document.

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=new+young+porn+stars In PDF document text
    • http://revim.dresspurely.com/uploads/1/3/1/3/131383363/xewaredexob_bemizomozubi_puvifalimulewif.pdfIn PDF document text
    • http://files.rlhslifescience.com/uploads/1/3/0/7/130739571/fugojelaxu.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/1/0437/6186/0757/files/85144620558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4058/7431/files/zefejabajirupubur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/89733439935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/1393350377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/15846688359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/61183370630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/beresheet_hotel_contact.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/simple_banting_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/grammar_test_online_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/19855896237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/bebimuxuri.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 1

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_off000067a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A9 5116 bytes
SHA-256: 0a6faeb7d0bd0b5a74d2f34a7f235284bed2eb7c5da2dc8ab5339e3973c6d050
font_01_sfnt_off00007940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7940 9924 bytes
SHA-256: dcf9649161d1533359ded8023afaacd6db0e02cc45f157d54cef9d8daeb4bb2b

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