Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52a02d163887cbe…

MALICIOUS

PDF

78.0 KB Created: 2020-12-26 19:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fbf6441feea75df3a4e9f27628e2a0cf SHA-1: 9c2ea332cd59c2c83a17cc3e9ddcde6d3650b542 SHA-256: d52a02d163887cbefdfcdd776ae058144304b6e82f1342b2f811f158c0243371
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'SE_REMOTE_SUPPORT_LURE' suggests the document attempts to trick the user into installing or connecting to a remote support tool, which is a common tactic for phishing or malware delivery. The embedded URL points to a suspicious domain, likely serving as a download or redirection point for a secondary payload.

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/123?utm_term=the+christian+delusion+why+faith+fails+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375358/normal_5fa6f5b06bda4.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/ggrvhbV/next_business_tycoon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f8821589d5dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388598/normal_5f9f21b41f51e.pdfIn PDF document text
    • https://cdn.sqhk.co/varaxupumami/jetwdQJ/34644641838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375342/normal_5f9b0fa9b6d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_5fc0f8086cf90.pdfIn PDF document text
    • https://cdn.sqhk.co/vosiwuli/hji9Vgg/73538171126.pdfIn PDF document text
    • https://cdn.sqhk.co/jeposanop/igVpRNH/62442659896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460981/normal_5fb4aedb0d38e.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/i9icaii/14574933673.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/subud/pujijekevaponenax.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/17036078339.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/suzefilufefaxu.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C1 5268 bytes
SHA-256: ad391769996994752e23d2c5bfe10dadfbad0727e55154af6f09849c5d15bf65
font_01_sfnt_off0000f8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BA 10688 bytes
SHA-256: 6abe4c08b9f7ab667bc122f70c82a736c7f42ca711bcf896bd965b17717b7ee3
font_02_sfnt_off00011d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D11 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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