Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddc3f834d21698f…

MALICIOUS

PDF

80.1 KB Created: 2020-11-22 12:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7ed313b92c4275174798ac5fb5c12d31 SHA-1: 11885a8bf6c04ee3d258c77dd39e6a05d589e516 SHA-256: 3ddc3f834d21698ffcd09ce3ceae9f1f1ca9522e156454c24e3a1eecc6e8503e
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://trafficel.ru/123?utm_term=army+rank+structure+chart PDF link annotation
    • https://vitumiwoz.weebly.com/uploads/1/3/4/6/134697216/ramaziv_tizarelune.pdfIn PDF document text
    • https://woninulanomawij.weebly.com/uploads/1/3/4/6/134670754/5673146.pdfIn PDF document text
    • https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/wivamuvejiwatuludo.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/56ec34af-69a7-4f0b-9795-e6f9c294b79c/86884597138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48575073-b5e8-4d87-b740-e0d17bbf7c18/republicain_lorrain_necrologie_pienn.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/shia_islamic_calendar_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb8fb2ae-eda1-409d-bb6b-d1ce4ed67d3f/65928120381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032d79c8-dae4-4b13-b17e-df3e67429a44/blender_game_engine_physics_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5c5a7d-3770-411a-a026-d40ba427be5b/how_to_download_both_mods_and_shader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f8c069-99d2-43c6-94c9-4e69b4a133c7/wowidewifuxovarisoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/781e7af1-4d3c-4ee6-b00a-88a1688d5056/84836698608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7afa1c57-356f-43f1-befa-f8b2beaa1d87/46910494391.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_off0000fc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC87 5164 bytes
SHA-256: 0aa9becceff0532831fa1190384048b260d9fe5b5653c0a11a3b0ab35a4d8c8e
font_01_sfnt_off00010df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF2 11536 bytes
SHA-256: e7c57955793fb60f249c7892b8610737b6c25dd620279ca44acc5600342b7786

Open this report in the interactive analyzer, or submit your own file for analysis.