Malicious PDF — malware analysis report

Static analysis result for SHA-256 d002008ae20ebe3c…

MALICIOUS

PDF

94.0 KB Created: 2021-03-16 14:06:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3498611e2a6ed005aa85f48f911b9d3c SHA-1: 2811a7190508fe3f5d87709cf5f1e99653887c44 SHA-256: d002008ae20ebe3c27a0385461b7c6a50e7293fdde2e9c1e711c351234eb81e2
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a lure related to 'reading and writing brochure'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/award?keyword=apply+yourself+to+reading+and+writing+brochure+pdf PDF link annotation
    • http://xefemile.22web.org/2d_animation_video_maker_software_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_6020fa688eb6c.pdfIn PDF document text
    • https://cdn.sqhk.co/lopijikuvi/hDgjieG/how_to_get_free_gems_clash_royale_hack.pdfIn PDF document text
    • https://tojuxumisadef.weebly.com/uploads/1/3/4/7/134714483/mufobesoxugabovuz.pdfIn PDF document text
    • http://rokupaxag.22web.org/jodukak.pdfIn PDF document text
    • https://xemavuvewo.weebly.com/uploads/1/3/5/3/135394060/8042272.pdfIn PDF document text
    • https://relakurofur.weebly.com/uploads/1/3/4/8/134872141/gegesif-filalezuza-powabodomikufa.pdfIn PDF document text
    • http://malevularis.22web.org/honeywell_security_alarm_system_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383688/normal_60152975dfd01.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/EijZghY/zombie_target_dead_trigger_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/6mt2jdB/95297304877.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_f2c4d5fc08a4423086f67c7e608ea83f.pdf?index=trueIn PDF document text
    • http://lesigoviweti.epizy.com/75384518650.pdfIn PDF document text
    • http://tutivute.epizy.com/wozejugilugafuf.pdfIn PDF document text
    • http://wexewowi.rf.gd/55568854727.pdfIn PDF document text
    • http://jiboleramar.epizy.com/24808325248.pdfIn PDF document text
    • http://sutazobizomobuz.rf.gd/disuzaburil.pdfIn PDF document text
    • https://c22e5cf4-338a-4003-9cad-c1cb0be29285.filesusr.com/ugd/3db607_8debedfb3a26422b8e4567a4bbd5f047.pdf?index=trueIn PDF document text
    • http://fakotimu.rf.gd/51203350990.pdfIn PDF document text
    • http://nerebadaguve.epizy.com/total_conquest_mod_apk_android_1_com.pdfIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_53bca07bdfad4c698025e6943ba57eef.pdf?index=trueIn PDF document text
    • https://d6aab468-caab-4d9e-910f-d3bf64ae4104.filesusr.com/ugd/5438e3_a2f241430d04431ab22824c22ba59191.pdf?index=trueIn 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_off00012e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E96 5740 bytes
SHA-256: db2d7d9b3c96cf3628f7d8a894cdc1db91ee03eb94d9cab8139a9a3ad9a4dce3
font_01_sfnt_off00014233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14233 11708 bytes
SHA-256: 2f1567d56f9afc169c27709addbeca6536b0fd5f00807c869202eb0ea0adb86a

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