Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb7216f4d62c0e1…

MALICIOUS

PDF

52.6 KB Created: 2020-11-02 21:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 281cdc6002b0ee36ea16c4e2c6fd9485 SHA-1: 5b89e39ed8b13c318d1c2426987518c09a066161 SHA-256: 3bb7216f4d62c0e1d66d2127aadb6db92560946a88025046e05c6661b26c1cca
124 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=d+d+breath+of+the+wild+monster+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4423757/normal_5f9a56352eb2f.pdfIn PDF document text
    • https://xiwitewikilimav.weebly.com/uploads/1/3/4/3/134371529/kegakasone-vosolaluz-zabexelamave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f8d6dad73d2d.pdfIn PDF document text
    • https://pegepefip.weebly.com/uploads/1/3/4/4/134455730/b55f640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377102/normal_5f914a1ecca5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5f9b29d98df79.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/6011874.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/gafivexekuvo.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/b48d71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f8f6b8f72fef.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/1/0504/6294/9551/files/sirojalebisesaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/annihilation_jeff_vandermeer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9950/3254/files/hard_disks_store_and_organize_files_using_tracks_sectors_and_cylinders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3327/5801/files/17237330274.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_off00008102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8102 5260 bytes
SHA-256: 49e27af20be14e832838a14a631fe995d1c445c42664ec2f2057d391a508038e
font_01_sfnt_off000092cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92CF 10640 bytes
SHA-256: 5093c2f8b1aac45f613f6f6010162add06dbbe6b957a23cb0f525e4a65460b76
font_02_sfnt_off0000b71a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB71A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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