Malicious PDF — malware analysis report

Static analysis result for SHA-256 beac8b29c3f997f3…

MALICIOUS

PDF

75.7 KB Created: 2021-03-23 16:26:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 112e73c8e8cb3bd371d85b011968ef41 SHA-1: a2a5a50f3b35af16470be161523b171e7b7642b5 SHA-256: beac8b29c3f997f3965e013b4d97950c0142c96851564c853c6374b9c7493114
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious URL, which is likely intended to trick the user into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing and a trojan. The document body, though heavily obfuscated, contains keywords related to 'apk fb mod', reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/wix?keyword=apk+fb+mod PDF link annotation
    • https://cdn.sqhk.co/nudofarus/3hjVPYU/hockey_doo_doo_doo_doo.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/iiAl1MK/88802084335.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_60323c38a37ef.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/rlicjjW/44140666959.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489607/normal_5fe464b176412.pdfIn PDF document text
    • https://cdn.sqhk.co/kojetozativ/xHoCjez/gebomo.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/hhaWgiD/6815866913.pdfIn PDF document text
    • https://cdn.sqhk.co/moturira/hcghfhj/nolela.pdfIn PDF document text
    • https://cdn.sqhk.co/kamepixuxuk/gcsPdjd/35409526995.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/zeM3ie8/hockey_scores_2020_playoffs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485818/normal_60294cb1a9049.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/bhaTbPC/online_quran_teacher_jobs_in_rawalpindi.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/nodetuxapabara/mera_wala_dance_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/jubedupamozutizevu.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/where_to_buy_femme_forme_kindle.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/96598526800.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/runaxovowopavakal.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/annamalai_tamil_movie_ringtones_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b8ca806-bfa9-49a5-8914-7ba90b8310f7/the_norton_anthology_of_american_literature_ebook_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a98a5dda-e9a2-449e-a6b6-18b5aef41173/that_evening_sun_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d3e913-d5a9-4076-a5eb-248b0b4faf98/60854102624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f7b779-058d-4b15-b46e-7c1e8ab9272d/gegudani.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_off0000ed0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0F 4864 bytes
SHA-256: 402f320f8d39bd7b99f31726d5e6876a5a89ece4cf42a9d029a341fff60307d8
font_01_sfnt_off0000fd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8E 10680 bytes
SHA-256: ef26d7e7808510042d49eb49441c846c767e127e986ff5501edca47dec668cbf

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