Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbec47877e721ffb…

MALICIOUS

PDF

77.1 KB Created: 2021-03-03 04:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 889a0fb56016a37369c2b4ca51ff6ba7 SHA-1: 7455cd666e6fdc22756454e3286e9ab4bd0d39a2 SHA-256: bbec47877e721ffb1c7bd3042f84215f7644a1f8a031b4b3a6b76d706e048a84
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting or suspicious domains, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates the document's purpose is to host a large number of links, likely to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/123?utm_term=how+to+increase+lockpicking+wow PDF link annotation
    • https://lokejefu.weebly.com/uploads/1/3/5/3/135301848/ziwapadi.pdfIn PDF document text
    • http://umdtheatre.ru/nopewusala03kfw.pdfIn PDF document text
    • http://legrand-spb.ru/impresora_hp_deskjet_f4480_instalacivvtle.pdfIn PDF document text
    • http://susuwefusedev.iblogger.org/44246068417.pdfIn PDF document text
    • https://kiwiwutirove.weebly.com/uploads/1/3/4/7/134707888/0bb1c649d74f97.pdfIn PDF document text
    • http://lnstagram-helping.live/allshare_cast_dongle_app_for_androidku3iw.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/narokodo-nevin-rulifugutupop-javirabikitij.pdfIn PDF document text
    • http://milano-moda.space/what_size_whelping_box_for_a_miniature_dachshundrn7kk.pdfIn PDF document text
    • https://cdn.sqhk.co/tewokozogop/qaKhiHE/roku_tv_remote_finder.pdfIn PDF document text
    • http://ratubave.22web.org/cells_and_functions_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/tirazirevemu/dRgeFib/demikizunu.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/definition_of_circular_motion_answer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xifofemixogo.rf.gd/moe_eotc_guidelines.pdfIn PDF document text
    • http://funasuruwet.epizy.com/determination_of_iodine_value_experiment.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/solowifoja.pdfIn PDF document text
    • http://madulok.epizy.com/gizawukawisirugedona.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/57703415933.pdfIn PDF document text
    • http://dimogotewebi.epizy.com/7440812141.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE234 5004 bytes
SHA-256: 16c5aee1141ea728b3a67600c9df24c4131401180bd31ce1f0d268edb7d735b7
font_01_sfnt_off0000f34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34A 11220 bytes
SHA-256: 008aed1d7deaf4f68048eb665ed265a601697f6ac5fe547a34f0da0d2512d25d
font_02_sfnt_off00011959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11959 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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