Malicious PDF — malware analysis report

Static analysis result for SHA-256 149a883d81d6587f…

MALICIOUS

PDF

53.5 KB Created: 2020-08-21 15:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17acb0a535e0585b9dedbd0d3fb8cab2 SHA-1: 449df112be07b56d1ecc8310428ce0757aa6a38e SHA-256: 149a883d81d6587f2d944d2c4d874e064fa5034a068383aea91f76bd9aeb5255
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.com). This redirector is likely used to obscure the final destination, which is probably a phishing or malware distribution site. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a deliberate attempt to lure users into clicking it under the guise of a 'reference guide'. No scripts were extracted, but the presence of malicious redirectors and the ML classifier's high confidence indicate a malicious intent.

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=industrial+lubrication+oil+analysis+reference+guide In PDF document text
    • http://gowefib.thorsonpto.org/uploads/1/3/2/6/132696067/9dc36ecc91.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/1/0438/2133/4690/files/42341364807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/bokaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/belodeloluxikuzozijufurik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/angiografia_carotidea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/5802095131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/pixutorelejapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/battle_run_coins_and_diamonds_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3225/5392/files/83898287154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4945/8591/files/nugakafomugaxonexix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4692/0615/files/composite_functions_worksheet_algebra_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifowugebivagobawogun.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 8

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_off0000921d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x921D 5368 bytes
SHA-256: 72c7e439b220395e6b58e6a7fe5a7133a73fded91bffc90b8b5e50726eef1d47
font_01_sfnt_off0000a469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA469 10924 bytes
SHA-256: c5b1e44721aaf25d2b51163f2c75a04036a8848cfed112666bfc43a15c9c9d47

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