Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd9c86a9d0a5737…

MALICIOUS

PDF

68.1 KB Created: 2020-12-13 17:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d2372ee3487a695febee47377216286f SHA-1: 2d9a5a63b94c33c5bdbc699bb35134e8ea3ffc71 SHA-256: 2dd9c86a9d0a573753953703ff727a47d4c59f095b841859f65ef91745165ced
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/strik?utm_term=fancy+letter+stencils+large PDF link annotation
    • https://xinorexuvon.weebly.com/uploads/1/3/4/6/134608307/aa3c6d17.pdfIn PDF document text
    • https://sojabejob.weebly.com/uploads/1/3/4/8/134890412/8450c0c41078e4.pdfIn PDF document text
    • https://zativazu.weebly.com/uploads/1/3/4/5/134586929/mamizaj.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/xaritegawazake-guviv.pdfIn PDF document text
    • https://bitejidiguxuv.weebly.com/uploads/1/3/4/4/134484476/vutureba.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://static1.squarespace.com/static/5fc12df85bcb0228a284406c/t/5fcac53e0acd1d5a0910aee2/1607124287794/the_roommate_movie_soundtrack.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5407160f2895dc1046ad0/t/5fc6e06ebfb90028be40f49a/1606869103240/cut_the_rope_2_windows_10.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc378c5085bf90c0e0d73db/t/5fcf584a1901dd4d2ed2c604/1607424074502/fezoner.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/clarity_zedd_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db76171e-ecea-42ac-a057-bc985b8652fc/rival_16_qt_roaster_oven_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/maytag_washer_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aadd428e-7357-47e6-836c-5770137545b8/resume_personal_statement_examples_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3727e2e6-23bb-4072-8f42-c21ce7f4b4ae/74744005366.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a84402915d4a16f9ca82/t/5fd625f7c4373837b9038e31/1607869943841/37727443902.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD2 4704 bytes
SHA-256: d56292343185fe708a594bdcaf5a4e9b8a229bcbd9387b2a543c175299ba7fcc
font_01_sfnt_off0000cfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD4 11064 bytes
SHA-256: 85a36f66d84cc4faf2436e691677d6e835b67f8abe2398ce904467f3056dc8fb
font_02_sfnt_off0000f587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF587 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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