Malicious PDF — malware analysis report

Static analysis result for SHA-256 98985ef5902955d0…

MALICIOUS

PDF

69.1 KB Created: 2020-07-30 23:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8aeac6ded22fcb91b1069c592d811566 SHA-1: 14fb73fb54350005b26ec42c90f50c187e2c93bd SHA-256: 98985ef5902955d0da856f6d5b7d6dc34a29eb30aa77a197bf3af642ec7f5fdf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. One of the primary URLs points to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of a link farm heuristic further supports the malicious redirection attempt. The overall pattern suggests a phishing or scam lure.

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.ru/pify?keyword=winnie+the+pooh+script+pdf In PDF document text
    • http://files.sbcusd-career-pathways.com/uploads/1/3/0/8/130874058/simubewefuji-sexanere-vumaroti.pdfIn PDF document text
    • http://files.bcbsca.org/uploads/1/3/2/6/132682685/5772793.pdfIn PDF document text
    • http://files.bettercapsonline.com/uploads/1/3/1/4/131453598/1d8e94ad.pdfIn PDF document text
    • http://files.cristianamente.org/uploads/1/3/0/7/130739524/5681599.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/1/0430/1540/5725/files/kokigulugarav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/sotofojuraduxarekalus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5354/files/25330095120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/35073102227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/noxogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/34093464328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/82173035859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/rabixusegujil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/41187636813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezax.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_off0000d2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DC 4800 bytes
SHA-256: 0d03b6e2c37668ff64671fe5147cd578bd5159f92a7cd89c7fb8bc07e275e464
font_01_sfnt_off0000e32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32B 10580 bytes
SHA-256: ca9b20a21ce33fa2c9c5831dd6df640366b515ea15dbfbe6380d12768cc313f4

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