Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade916a40cdc4b1b…

MALICIOUS

PDF

75.4 KB Created: 2021-05-13 05:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: af7792c20c0de94bab0ee920fc7eea15 SHA-1: b04e2787b5eb60d8a6bf7e7b65140b0efbadc7ca SHA-256: ade916a40cdc4b1b1b936123087e3466f51d8830a46c2d0115f4041d99f2a630
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/strik?utm_term=the+endless+trench+trailer+deutsch PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466165/normal_5fdd853a795b6.pdfIn PDF document text
    • http://akfb.online/283818777752v0wr.pdfIn PDF document text
    • http://terem.space/37979490551pb5my.pdfIn PDF document text
    • http://kemytbok.xyz/42675079290sdzqd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465389/normal_6056652e1c70c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://814bd5e1-0b6f-40f8-b2e9-6ab0015c5eef.filesusr.com/ugd/cc77ff_18d0e0dd6cf64e4bb68688577f3c79b7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bulujono/76548902493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f49c716d-238e-41ba-810b-7a4f2c82bb1e/16325694757.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/watson_lake_fort_collins_fishing_report.pdfIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_3472f2a788e14ccba2ba40e956248138.pdf?index=trueIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_f6c552a062024e459f63304a0ab7de56.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nowokil/l_love_you_ringtone_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/431ba189-92db-40bb-95ee-41d1f7ab613c/82298748100.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/21778884192.pdfIn PDF document text
    • https://f64a1a0a-debf-4843-a838-a34c0cae0f4a.filesusr.com/ugd/89602e_d0a3daaefe314ca38bc3a63e473d29db.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/memeka.pdfIn PDF document text
    • https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_ca5b85aed33d42c49e8247884911f714.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0758a9c-e40d-4183-b5d3-5da323761dc2/what_is_a_used_rainbow_vacuum_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/22572457377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/703cd326-66d8-4a8b-b4e7-d1c107d6cd12/13668862271.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 8

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_off0000e5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D4 4976 bytes
SHA-256: d78a0eb1a414c15f14b7a923ede7612760c9a0543cd572fddf062f6b141a6210
font_01_sfnt_off0000f6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B0 12356 bytes
SHA-256: 458ddc003bf41e34e70cf2a1f4b4c6c9d24d94a699d6b899ab2f940aabba447b

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