Malicious PDF — malware analysis report

Static analysis result for SHA-256 196f474af26058ff…

MALICIOUS

PDF

49.6 KB Created: 2020-08-11 21:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0cb6c028b2eb50a2eda955a1d84848e9 SHA-1: b44ac225f58872af554b3fe821abfa77b23ff653 SHA-256: 196f474af26058ff4e67dfb81291398f63ffbf9e376b5c9869d7cdc3c26f4c73
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to mimic legitimate downloads, likely as a lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=bachianas+brasileiras+5+pdf In PDF document text
    • http://files.generalpencil.com/uploads/1/3/1/4/131483147/lavatagatejoni_lusefu_wowopolipukufi.pdfIn PDF document text
    • http://files.zionpainesville.com/uploads/1/3/1/6/131606284/9fc3f4289.pdfIn PDF document text
    • http://files.cornwallrailwaysociety.org.uk/uploads/1/3/1/0/131070483/c60e87eb2924903.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/1/0431/0935/1578/files/business_letter_writing_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0821/1619/files/22606032483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/saxalutamaziwasopikilet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7455/0950/files/fox_float_rp23_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/11623983251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/15770268330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/words_from_periodic_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/21290821372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/girozezolatazobizen.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 7

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_off00008462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8462 5556 bytes
SHA-256: faecf61ef35f59e61f7d44af351a9c12cdebac47f61d605969a61767dc5e9764
font_01_sfnt_off00009734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9734 10144 bytes
SHA-256: e38383f30bb720a1845e42989277f1365fdfd213f39aa55d6cb8d7694c9a0dd4

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