Malicious PDF — malware analysis report

Static analysis result for SHA-256 2428e7510f335ad7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 13:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5603b44276b0630e319a1564acdd0b30 SHA-1: b328bd706efaa5971983c93376db6f33727f01c9 SHA-256: 2428e7510f335ad745f05c28a556e4c1747dcb6ccb94c1a317674fa57296ed90
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links directs to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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=markdown+to+html+python In PDF document text
    • http://files.circlecamps.org/uploads/1/3/1/4/131407144/d5c6e.pdfIn PDF document text
    • http://files.joegrabowski.com/uploads/1/3/1/8/131857465/bikesito.pdfIn PDF document text
    • http://files.simplyskinandbody.com/uploads/1/3/1/4/131438471/dulixuzom_lojokidoda_fivoxovano.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/xudobam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/26496478310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/52823619535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/27844884065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/83263557401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/58306180664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/wabolufisajonegigob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/56918616029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6702/2239/files/tafumakogonojis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/vakexevanufanevuduzadiv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C36 4908 bytes
SHA-256: 8502b56cb6347bd8023d671e30f0a6a7b0a1e143cf69ed301d14b36b9eb96b22
font_01_sfnt_off00006cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 13120 bytes
SHA-256: 211c0e99e87ffe922ea160e562cbd49c3fa2263e9ac1dcde031a08ce83325310
font_02_sfnt_off00009738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9738 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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