Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad49a0221376195…

MALICIOUS

PDF

76.6 KB Created: 2020-11-19 03:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2f2a32e05b4d5beb833877d4e66ae418 SHA-1: d8a83161f9095210c95032e98a365262ce1757a6 SHA-256: 0ad49a02213761959562ffa102c8b2822fbbf36ac9c8dbe425f9a0377c6d35a4
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/strik?utm_term=1998+gsxr+600+service+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f88c20046476.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f8b4f4e31aa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463272/normal_5fa79e65b147f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464078/normal_5fa37e0d30852.pdfIn PDF document text
    • https://duxawedi.weebly.com/uploads/1/3/4/4/134477895/2137081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492536/normal_5fb5ae46bd8bf.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://s3.amazonaws.com/zowejunef/gijakulezanevaruvijiki.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/34800947430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1701a688-68fc-43eb-b2a9-7d008218db76/tovabozeroz.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/paminimeduzudedamepegef.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/a_raisin_in_the_sun_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a8270e7-e766-408b-9f21-95fb7882933f/44657994624.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/87294621170.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/google_logo_brand_guidelines.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC899 5544 bytes
SHA-256: 1307050792182fe46a9fcdd8b98eddd778eb974efe3a686ea591803fa86a97df
font_01_sfnt_off0000db45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB45 11820 bytes
SHA-256: 5efc5129087100f0513efa71db4d91672062a6c4d358bc0e586debfa5ff315a2
font_02_sfnt_off00010197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10197 16144 bytes
SHA-256: 63a00075b6585576fde9faae807a183b846b293c24c764fa28757b45c8a5091c
font_03_sfnt_off000116a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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