Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a92bb51fdd5e1e1…

MALICIOUS

PDF

39.3 KB Created: 2020-08-10 11:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f32f1d5776b19b7ef8c6ca9687731541 SHA-1: f09bd3d8f870f8d986360ca97d3321a87ce71cb9 SHA-256: 9a92bb51fdd5e1e1a8751cfc4737b2f308afb25fbf2fddaf5c943c9cafa28826
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, a common tactic for SEO spam and phishing campaigns. One of the primary links, 'https://ttraff.ru/pify?keyword=realistic+rock+drum+method+carmine+appice+pdf', is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended destination. The presence of numerous other links hosted on various domains further supports the link farm heuristic. No scripts were extracted, but the PDF structure itself is used to host and distribute malicious links.

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=realistic+rock+drum+method+carmine+appice+pdf In PDF document text
    • http://nowoxe.victoriahulltemple.com/uploads/1/3/1/8/131857315/6888926.pdfIn PDF document text
    • http://files.maitlandstreetrodders.com/uploads/1/3/1/4/131437017/nufigu.pdfIn PDF document text
    • http://files.4loveofbaskets.com/uploads/1/3/1/6/131636651/kotoku.pdfIn PDF document text
    • http://files.fumigation-services.es/uploads/1/3/1/4/131407051/goderotorebawuduna.pdfIn PDF document text
    • http://files.essexwindowfashions.com/uploads/1/3/0/8/130814831/4125604.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/1/0436/1617/4243/files/trapping_rain_water_leetcode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/tuvuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/37659177095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0366/5822/files/gegimodobusigozalegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9939/8052/files/sumawumosepubebiganowon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6533/6217/files/jinaniwugipudemumabinib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8353/0394/files/ashrae_handbook_hvac_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/bujinesuxunedabodozugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/sekowegudesuzunobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5559/3110/files/togevobimusezetite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/gezunadufupexavatomaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8962/9079/files/earth_s_atmospheric_layers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/saruxuturolulanodixaka.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E61 5348 bytes
SHA-256: b42358aaafb80a3aa4da563da2f488f65f1ff62f656110f4a662dc7c2610bdab
font_01_sfnt_off0000605d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 9740 bytes
SHA-256: e32c3f72a951bed9ec5a9ecc580eea7acc04e1039b33204dc754dc588b948a9a
font_02_sfnt_off0000819f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f