Malicious PDF — malware analysis report

Static analysis result for SHA-256 011b9ed9304555d0…

MALICIOUS

PDF

71.2 KB Created: 2020-11-19 22:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9d01c8b77877bc7a6a2da536c6e9754d SHA-1: da40f370797937181f94efa18bb109ae0aa972b0 SHA-256: 011b9ed9304555d086b11977ca66e539d5649fcf2ba315384e569d25c9e91af6
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 0.9997

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=the+babydust+method PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5f8bbf0f28f8f.pdfIn PDF document text
    • https://vakumijajuxos.weebly.com/uploads/1/3/4/4/134465568/dccda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416927/normal_5f9a94f13b407.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/21d86110-06f0-4401-a6f6-787fae56483a/mimari_sunum_teknikleri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444eeb59-2bf7-4396-854d-5fe55955bb1b/boy_scout_trip_planning_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef562072-6d0e-457a-b7ed-fc6d350cf607/92382416211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fdc746f-b499-4a30-a93c-378d0516a15a/23303526354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8ed73e7-86bd-4912-8e29-2d24da00e186/rsc_jewelry_mark.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d17c57d-6cdc-4ac5-99bb-c1c43108a58b/33178036580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b716fdf-dec6-429b-82db-2b59f9bb9b24/mafirumijozosefakalefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e0af603-9d8a-432c-8104-82e9c4abbb66/73207821319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47902b1d-e0d5-4a4c-97fd-0e92ec98b3a6/raze_3_unblocked_games_google_sites.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_off0000db45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB45 5128 bytes
SHA-256: 19f4d4da66bdcd1fb9044797dcb7c5538d47db5507671896306d0f07fc1f5d43
font_01_sfnt_off0000ec8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8F 10412 bytes
SHA-256: fc20c619b6cd1f9b9d77be6d4f85f984d681466078834abe6b44b6a64fd28ab9

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