Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a1ba4cd8c78135…

MALICIOUS

PDF

69.4 KB Created: 2021-01-24 03:46:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b4cab0c46b835a22dbb9f39f897af7ab SHA-1: 9733427730d677281d1fd13348855673d5dea737 SHA-256: d8a1ba4cd8c781355509745657b24d1155508f8b6f1aff19ee43dcd9ed80f8a6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL that leads to a domain associated with search queries, suggesting a redirection or phishing lure. The document body, though partially corrupted, contains keywords related to 'Movistar peru en vivo', reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=movistar%20peru%20en%20vivo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498882/normal_5fe7656d64482.pdfIn PDF document text
    • https://site-1226757.mozfiles.com/files/1226757/android_appcompat_actionbar_icon.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/jbghDkw/28158376186.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424683/normal_5fded76674292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fe72f8bb9f91.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/GsoMjed/62743402366.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/hf07jj5/stickman_fight_free_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421329/normal_5fefddc5a897f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367964/normal_5fc93d83dc88a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484999/normal_5fcf8adab0f71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426550/normal_5ff5de053ab94.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/fCieicK/corpse_party_blood_drive_apk_obb_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/wtnLFhj/fabojotetuner.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/hfXQCjb/stick_war_2_unblocked_tyrone.pdfIn PDF document text
    • https://cdn.sqhk.co/vozaxodep/ghcVu2v/63574953219.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/f3biejb/terekigafetebugid.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/gegdAgk/ticket_to_ride_first_journey_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remeranexe/doluva.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/oxford_oregon_debate_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/movies._com_bollywood_2019.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD128 4844 bytes
SHA-256: cd63dfaad3ab188f429e0cc3d764590aaf7d7a0f872b0ff00174a9621e2be4ed
font_01_sfnt_off0000e1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C5 11888 bytes
SHA-256: ea7c7336d7953845f8f09d483750e861626a1e74d7291661e02f90ce96651700

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