Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04c6a88648595f6…

MALICIOUS

PDF

44.6 KB Created: 2020-08-14 21:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d84dfc357ba413b720307d533fabb30 SHA-1: 0ce1034a29dd2ec34e7c6172e0f969c538edc6a6 SHA-256: b04c6a88648595f62e5c635f5a24f92f751593b8038f7f43ff8e7256cabc803b
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, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=guidelines+caesarean+section+maternal+request', is flagged as a known malicious redirector. The document body itself is heavily obfuscated and appears to contain metadata related to 'wkhtmltopdf', suggesting it was programmatically generated.

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=guidelines+caesarean+section+maternal+request In PDF document text
    • http://files.communityplayerstucson.org/uploads/1/3/0/8/130813134/6603057.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/1/0431/2953/6676/files/63428997475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2624/3996/files/career_options_after_12th.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/toweta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/8759565769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/ginenexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/43169949143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7686/8510/files/47694074603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/zixanunux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/gidolezizanetebunebage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/xajusolipag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/8821471177.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 3

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_off00006fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDB 5244 bytes
SHA-256: 5e4efa24cd75ec9cca93c5d2ddd806276e5f6ad303cfd0f2ca7f2dae016be827
font_01_sfnt_off0000818d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818D 10456 bytes
SHA-256: 8148969c8cc7f355d4810269965e46a98783424a92d412d9b6524f8847fce8e9

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