Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90a2c15a3ebd138…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 06:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67cd3f0c5bd4db00da21531c6b91e78d SHA-1: e8cc0737a3b6f07c25d79c5bb9f67a81c7e08a2f SHA-256: d90a2c15a3ebd138635ae0f610fb3842fe30e0a47eaafaa45059995b8c8a1cf6
154 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, a common tactic for SEO link farms and phishing campaigns. One of the embedded links, https://ttraff.ru/wb?keyword=modernism/postmodernism%20peter%20brooker%20pdf, is identified as a known malicious redirector. The presence of numerous links, including those pointing to external PDFs, suggests an attempt to manipulate search engine results or lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=modernism/postmodernism%20peter%20brooker%20pdf In PDF document text
    • http://lifafewi.breaksticks.pitbullhill.com/uploads/1/3/0/7/130775997/86d21a448a3.pdfIn PDF document text
    • http://fomanew.vipercussion.org/uploads/1/3/1/6/131637881/tolipimibaju-gifipitowudefim-zowovux.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/1/0432/9167/2736/files/sudoxogebinulewafuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/kisabuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6195/0117/files/42191090616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/37953594857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/33966414848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/didisimofebukapemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/norazerutegav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8228/4194/files/kowapugazuxoledi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1466/5886/files/152216060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6212/2903/files/75997441266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/minecraft_pe_0._13._0_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/93555500816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/88707369689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9034/files/nags_head_north_carolina_weather.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_off00005e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E17 5188 bytes
SHA-256: c1c778198d8a71fa47071b3fd7fb29abff9a5f2f6f2760a66db065a72bf46e81
font_01_sfnt_off00006fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB6 10192 bytes
SHA-256: 53282cf2dd54b193688e26d027c561fb9a918c0f78d2291935dc394397b4425d

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