Malicious PDF — malware analysis report

Static analysis result for SHA-256 98cd2def1bedf0da…

MALICIOUS

PDF

40.4 KB Created: 2020-08-13 08:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9aeda4e4e78c21f73a48a265a562b635 SHA-1: a58abb53f555454098c74ea89b599cba95c57a9e SHA-256: 98cd2def1bedf0dad7dbfab18dfecc80e04aeee9e3de7c4a52ae497b129a074a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.ru/wb?keyword=amann%20girrbach%20steamer%20x3%20manual', is flagged as a malicious redirector. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, likely to disguise its malicious intent. The ML classifier strongly supports the malicious verdict.

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=amann%20girrbach%20steamer%20x3%20manual In PDF document text
    • http://files.minebricks.com/uploads/1/3/0/9/130969080/ccd188d0ea55.pdfIn PDF document text
    • http://gigar.oceanbreezeadventure.com/uploads/1/3/1/4/131413418/e946b5a460.pdfIn PDF document text
    • http://files.documentsresearch.net/uploads/1/3/1/6/131637635/704ca.pdfIn PDF document text
    • http://files.whitneyelliottphotography.com/uploads/1/3/2/6/132683264/gemugijerisowev.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/1/0438/4971/1781/files/how_to_write_a_character_witness_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/32307864048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9798/0056/files/suzalosoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/juzezulekuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/76077050424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/mifedulemivafoted.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/attack_on_titan_crimson_bow_and_arrow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0869/4171/files/acido_urico_en_orina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/pexetuvalowune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/lutetab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5740/4318/files/bronchiolite_cours.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_off00005eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 5572 bytes
SHA-256: bebb2e0551746691e8f6201c9ab5b5ca0e1e8b24ba025ce50a253ade7e6fcdad
font_01_sfnt_off000071b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B2 10220 bytes
SHA-256: f8e72c3e5870a50ae0e23f17a96b84521ba556c72389c33240681a7546ad5dfe

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