Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ab30b03948414a…

MALICIOUS

PDF

54.5 KB Created: 2020-08-15 00:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40cd25e76c891f623f30232688a9feb3 SHA-1: f68bd02514a17593d272c5769453a4d6f78dc501 SHA-256: e0ab30b03948414afb86c5379b55cf1ad1e61cb4dc47bfc0a79cfd20c387396b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector: https://ttraff.cc/pify?keyword=bilinear+forms+linear+algebra+pdf. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The presence of a link farm heuristic further supports the malicious intent, aiming to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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.cc/pify?keyword=bilinear+forms+linear+algebra+pdf In PDF document text
    • http://files.hconceptshop.com/uploads/1/3/0/8/130874204/rigibegomalovof.pdfIn PDF document text
    • http://files.spotteddairyair.net/uploads/1/3/1/0/131071137/6c75aa1a.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/1/0427/8976/5276/files/78276291076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/oxford_discover_level_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/metodo_ontologico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/hot_virtual_keyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/vamalinobul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/deroxewilaberele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8513/3992/files/areca_leaf_plates_project_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8724/0095/files/27597200183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4646/1855/files/automotive_car_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/xanejivogiwowezamekipixij.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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_off00007398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7398 5552 bytes
SHA-256: 27838cff51ac79686213591585beb6a822ae40769379b1388f3f336e52c48165
font_01_sfnt_off00008656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8656 14456 bytes
SHA-256: 948833a2f34969ff1683473d7c6a13f21f76764810b1ad9be731161bd9f40f79
font_02_sfnt_off0000b41b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB41B 17024 bytes
SHA-256: bd3b13a6f27acafadf7e978af8b7d77a28a066458c74dd1319d995e0000a43f9

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