Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb62c2e7d2e1f20…

MALICIOUS

PDF

81.8 KB Created: 2021-03-25 04:51:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f42d6215cdd04ddfbab6258b496d33d4 SHA-1: 280c41f1df6f5e323076352843e3653acd6ff2e3 SHA-256: 1bb62c2e7d2e1f20aabd91e0d214c37a8ba5db7f0bd6b7b3aac2d989d63f9b1f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many of which point to disposable hosting and are presented as search results for popular keywords like 'fnaf ar android apk'. This suggests a phishing or scamming attempt to redirect users to potentially harmful websites. No scripts were extracted, but the PDF structure and numerous external links are indicative of a malicious lure.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/wix?keyword=fnaf+ar+android+apk PDF link annotation
    • http://fojukivijivik.medianewsonline.com/statistical_methods_for_machine_learning_download.pdfIn PDF document text
    • http://zemimumaloger.iblogger.org/stemi_guideline_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/marunenoxak/gdvUhez/strength_training_gym_workout_for_beginners.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_603ecf73e8bf3.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufojigox/onWjiid/kigezejozez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463306/normal_6056c7aabaa6a.pdfIn PDF document text
    • http://dejuduz.22web.org/trane_xl14c_heat_pump.pdfIn PDF document text
    • http://tuguxanofa.iblogger.org/3888936822.pdfIn PDF document text
    • http://afracheat6.xyz/zokewewozew8gba0.pdfIn PDF document text
    • http://filanion.online/how_to_change_oil_in_a_push_mowertse76.pdfIn PDF document text
    • http://jefuvumerusew.getenjoyment.net/zoxap.pdfIn PDF document text
    • http://jaxifas.getenjoyment.net/91953045026.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zosetuguvajisu.epizy.com/gujarati_calendar_2020_july.pdfIn PDF document text
    • http://gipanigiwulaj.epizy.com/biodata_format_in_marathi.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/12003168902.pdfIn PDF document text
    • http://lutepotazor.onlinewebshop.net/the_book_thief_movie_google_drive.pdfIn PDF document text
    • http://besuwodusibix.rf.gd/61064377753.pdfIn PDF document text
    • http://wusuposakatoxel.myartsonline.com/nsfas_bursary_application_form_2020_download.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6B 4844 bytes
SHA-256: a9a43fef3b72fdbd0462c38ec6891cc707788a4edd3c0a30721dea9222a7b820
font_01_sfnt_off0000ff00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF00 10996 bytes
SHA-256: c196f4724f63f26d5439f7db0f9fe54fe414de0c94eb075cea07b639a61c6e09
font_02_sfnt_off00012498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12498 16120 bytes
SHA-256: fcb9eb6dda9bd85871dea2af886fe36482f59afbed4642006e79d2ab71ff4177

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