Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac07da0b03ac2152…

MALICIOUS

PDF

93.3 KB Created: 2021-03-14 11:25:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52997e3f5bcde64d8345b6cfd99bf3b0 SHA-1: 970ab0bedb9d52f10b745990bf03836e077e6af7 SHA-256: ac07da0b03ac2152ed6ca5f673159c3349d2fd57e95791169b423b262862d355
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware-hosting site. The document body, though heavily obfuscated, contains text fragments related to a product manual, suggesting a lure for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/wix?keyword=timex+wireless+weather+%2526+atomic+digital+wall+clock+manual
    • https://static.s123-cdn-static.com/uploads/4405662/normal_5fc6cc1072636.pdf
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5ff15f8cb259d.pdf
    • http://pinerapidsrr.com/how_to_have_a_new_kid_by_friday_free_downloadq6nmo.pdf
    • http://xefijemav.iblogger.org/52250011264.pdf
    • https://cdn-cms.f-static.net/uploads/4489988/normal_6012307c734cf.pdf
    • https://cdn-cms.f-static.net/uploads/4497650/normal_6029e71e47963.pdf
    • http://freefire-gifts.com/pilolaxarovaborarozibalnb.pdf
    • https://cdn-cms.f-static.net/uploads/4369626/normal_60259458c147e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b935c7ba-ee69-46e8-89a6-11899fc04b36/69809391617.pdf
    • https://s3.amazonaws.com/wupiwupiwot/akon_freedom_video.pdf
    • https://s3.amazonaws.com/fejakixoweka/weather_report_fort_pierce_fl.pdf
    • https://s3.amazonaws.com/dotivaf/boy_hairstyle_image_2018.pdf
    • https://s3.amazonaws.com/pezofut/explosion_sound_effects.pdf
    • https://uploads.strikinglycdn.com/files/b4d3d7c4-f236-4fc7-a5f9-da2d8016f20d/pisovasonixolexij.pdf
    • https://s3.amazonaws.com/batoragubukepo/3607010366.pdf
    • https://s3.amazonaws.com/jenisozazewubo/aquarian_performance_2_drum_heads_review.pdf
    • https://uploads.strikinglycdn.com/files/576e1755-7b8f-4b74-a827-0054af3148bb/44187834918.pdf
    • http://pujifobekef.epizy.com/80984287408.pdf
    • http://zuvaxazalafes.epizy.com/67676954140.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013293.bin
8c3d8e3892756c707967bce01a6a8b762bbb25f5646d2e873b5d681be3566d5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x13293 5036 bytes
font_01_sfnt_off00014393.bin
91ad0692e34df81e213b9af6f4c88e46a783f8440d5c3fd816d3a3a5ebd90f69
pdf-font-stream PDF embedded font (sfnt) at offset 0x14393 10832 bytes