Malicious PDF — malware analysis report

Static analysis result for SHA-256 41962ec6e4860f1e…

MALICIOUS

PDF

39.9 KB Created: 2020-08-13 23:02:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ca9971019b424e1256051dff7e3fd34 SHA-1: 0e870f80ec70daf32dd118eeaf1b3d6bea5dfae0 SHA-256: 41962ec6e4860f1e3f29b3105ff29f3e552c0f1d0a7ddf1878e7a491e5c74f9e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'ttraff.ru'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=ledger%20lines%20worksheet%20pdf In PDF document text
    • http://files.stpaulofthecrosslamirada.org/uploads/1/3/2/7/132741029/8136950.pdfIn PDF document text
    • http://xomebewa.thepeaceseekers-persian.com/uploads/1/3/1/1/131164132/3374887.pdfIn PDF document text
    • http://files.firecrafted.com/uploads/1/3/1/3/131383386/ragulawibox.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/1/0431/6761/3087/files/cancionero_liturgico_nacional_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/8297393561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/79301345550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1674/7170/files/john_deere_165_hydro_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/stay_trippy_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/31512281900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/xutevirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/51449874748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/85996659611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/49924882715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/castrol_magnatec_professional_c2_5w_30.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/90102961784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/vonebekivotoliwidafemazek.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_off00005cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF2 5192 bytes
SHA-256: bb692cbc7a41bc1498e1632ad79a2fd0632273b7ab15867f8f50455a22e4b28b
font_01_sfnt_off00006eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAF 10592 bytes
SHA-256: c9da9919a2afb14a7955311d3664f460231901efe394d877c1d8747df7a0ad96

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