Malicious PDF — malware analysis report

Static analysis result for SHA-256 340d9f75727c7c78…

MALICIOUS

PDF

40.7 KB Created: 2020-08-17 15:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bc0dc0e37f9421ed737ac7400926b10 SHA-1: c865848da3f2562f29d922b4b5759921b27e912d SHA-256: 340d9f75727c7c783f1ba97af9bacea7fac04579bcf585da82311ce36575f1ec
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.ru' associated with SEO spam and potentially malicious content. The document body, though partially corrupted, contains text related to 'free casino games' and the malicious URL, suggesting a lure for phishing or malware delivery. The presence of numerous PDF links further supports the SEO link farm heuristic.

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=free+casino+games+no++needed In PDF document text
    • http://tiwipuxok.amorim-neuropsychologue.fr/uploads/1/3/1/4/131453850/gaxapepa_doxolodafosot_nibovimusaw_kesus.pdfIn PDF document text
    • http://files.thefashionanalyst.com/uploads/1/3/1/3/131383624/wezunawe.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/1/0433/0687/7080/files/mapitawaluzosamorexub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/defense_devil_manga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/national_geographic_magazine_july_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1790/3003/files/45817123094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/71783288903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/wow_classic_mage_leveling_guide_1-_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/xitapati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/67191538149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/jefinipuzirugebomiwov.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_off000062a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A8 5180 bytes
SHA-256: 400afebbd5625cabd217b13d9d39a6ce09a2958aa4d96ab7fb11743e9f16dbc2
font_01_sfnt_off00007429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 10064 bytes
SHA-256: 2164c09d7d26d4d7e96064afebbd1857b14b2f9668f929f3d74b49da04a1e23b

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