Malicious PDF — malware analysis report

Static analysis result for SHA-256 425094dead8f1402…

MALICIOUS

PDF

36.1 KB Created: 2020-10-31 01:08:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dc8cb2e12622eb55f0b4f3fd9b6dca9e SHA-1: 240a5d57dbac455b9a1e64453eebe0d870fc2204 SHA-256: 425094dead8f14020ff88979b26a69c31af75978a1554aa75ffdb9601902e10e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/wb?keyword=il%20libro%20delle%20risposte%20pdf'. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the presence of a malicious URL within the document body strongly suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://gettraff.ru/wb?keyword=il%20libro%20delle%20risposte%20pdf In PDF document text
    • https://wotufoxak.weebly.com/uploads/1/3/4/3/134308946/kedezipulubikug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f890e6f4eba1.pdfIn PDF document text
    • https://lagafuxomip.weebly.com/uploads/1/3/4/3/134347440/xakulotuwiz-wemodav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421770/normal_5f9754bf332db.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/zosilat-wafipoka-velexuzalelakal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5f9c9ab9c5e6f.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://uploads.strikinglycdn.com/files/543c7105-ea43-4193-bb98-1e1123dda0f4/34578001061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4155/7146/files/seat_ibiza_2020_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc458f4a-cd71-4d77-8ba0-b409e156d2eb/sevubesipodopukubudi.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/skagway_alaska_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39a2411-e7c9-4930-9913-ab21707e9fda/tilomuwe.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_off00004404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4404 4584 bytes
SHA-256: 611ce7c116365c6c0c104bed1f5912d72f972350f41564cae217c75a3195bebd
font_01_sfnt_off00005398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5398 10516 bytes
SHA-256: 9d2926a904474d683fe4ccc35d7aa5cc49a73d85a0b1d0779d9c0c5e7583f0a6
font_02_sfnt_off000075f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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