Malicious PDF — malware analysis report

Static analysis result for SHA-256 8982605f961d2227…

MALICIOUS

PDF

73.6 KB Created: 2021-03-09 10:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: ad91bb177b071b1f4a745a8e5727789f SHA-1: f55c211775b5e2de74ac7082da302a6ace9a55ea SHA-256: 8982605f961d222746b425d3af8a15a5a52c009a18423bdfd99249654f254d5d
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ML classifier and ClamAV, with a critical heuristic firing for ClamAV detection. It contains an embedded URI pointing to 'https://baarspo.ru/wix?keyword=predators+ball+pdf', suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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://baarspo.ru/wix?keyword=predators+ball+pdf PDF link annotation
    • https://cdn.sqhk.co/foropogajag/pibwgg9/58495096845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487663/normal_5fd27b1b72ff5.pdfIn PDF document text
    • https://cdn.sqhk.co/pesenexur/jjg0iYA/diep._io_sandbox_how_to_spawn_bosses.pdfIn PDF document text
    • http://pasozabijegigus.iblogger.org/kewakikenuximolomof.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/d5ighjg/andis_pulse_ion_replacement_blade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407818/normal_5fe7ad8fac8b0.pdfIn PDF document text
    • http://xuvaguwanolinu.66ghz.com/answered_prayer_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390660/normal_5fec7c5b65778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464852/normal_5fd33ffbd561d.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/gijVhjw/bamolisakuvedejazuxefabiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480585/normal_5fde73cd762e4.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/VjfPW8V/space_explorer_4d_puzzle.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/ibIhghi/milk_chocolate_hair_color_wella.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/voxazedisula/laginawid.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/pagepimulifofejuwerubuw.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/4725792168.pdfIn PDF document text
    • http://gofuxanuwuj.rf.gd/backuptrans_android_whatsapp_to_iphone_transfer_full.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/rasulekebunuk.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_off0000e3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D1 5176 bytes
SHA-256: feb843faace738d9774bd9dd4c5a9694cce368fd46351559b4f30c47113735b5
font_01_sfnt_off0000f56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56E 10596 bytes
SHA-256: b23cffed5436eaf11fb96a0881a60fd5b32632450383ef981ac25a95dac2525e

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