Malicious PDF — malware analysis report

Static analysis result for SHA-256 c741e88f1a05274c…

MALICIOUS

PDF

82.9 KB Created: 2021-01-21 19:16:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0c458a4df0d9ffb117e846c26baf8294 SHA-1: 93b2a6348652d64b9e9ad42c167031634b2c1680 SHA-256: c741e88f1a05274c6f85f475c7aa45e9532af3b9a10fe90fb69247b2e13b5c4e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to host or deliver a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure for a free application download, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=edjing+pro+music+dj+mixer+free+apk In PDF document text
    • https://site-1172089.mozfiles.com/files/1172089/zidipogerozepararofo.pdfIn PDF document text
    • https://cdn.sqhk.co/pesofesidoke/i48hjSq/zekojux.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/JAUhiBU/venom_angry_crashy_rush_online.pdfIn PDF document text
    • http://kovemiwixipogaf.66ghz.com/xagebojezukajexaxakus.pdfIn PDF document text
    • http://begedotupatato.66ghz.com/21246960991.pdfIn PDF document text
    • https://cdn.sqhk.co/lifudidu/95wAw7Q/siberian_tiger_eating_bear.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505326/normal_5fc8f8d442186.pdfIn PDF document text
    • https://site-1172308.mozfiles.com/files/1172308/vizikekurisa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484093/normal_5ffc30ae5f3f1.pdfIn PDF document text
    • https://site-1174034.mozfiles.com/files/1174034/babekewenaso.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/0hiAzgg/one_punch_man_destiny_roblox_classes_tier_list.pdfIn PDF document text
    • https://site-1177042.mozfiles.com/files/1177042/50352087769.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://basefub.epizy.com/sh_phonics_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/catecismo_oficial_de_la_iglesia_catolica.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/jekive.pdfIn PDF document text
    • http://fabupumow.epizy.com/89810223414.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/37998607885.pdfIn PDF document text
    • http://tubulufegufixo.rf.gd/botakarivowowututudiraru.pdfIn PDF document text
    • http://wuxipuretox.rf.gd/wedding_march_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/classic_wow_warlock_guide_icy_veins.pdfIn PDF document text
    • http://viwuleraxukopiz.epizy.com/62113940409.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/saturated_steam_vs_superheated_steam.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_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 5608 bytes
SHA-256: f5ecd2139aec8b076610a2b027e06365cae2fb36b357a1e3f0ba02231d16186c
font_01_sfnt_off000100cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100CC 12156 bytes
SHA-256: b143eaa9bd9d79893b8306e6a75df9bdb175fd4a3e83a4c84efc820d8f383d64
font_02_sfnt_off000127b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B9 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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