Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7c34ce68c63162…

MALICIOUS

PDF

79.1 KB Created: 2021-03-14 07:31:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 31e50ce9a79a49a0bb80ba0ea9a65882 SHA-1: 88f9f6ab0bc8a91fa302b67d8446eac8f477aeab SHA-256: ba7c34ce68c631628bd83cfe50b576131e9e44581824bd9c0c802e68c42c31d2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/wix?keyword=super+mechs+hacked+game PDF link annotation
    • https://cdn.sqhk.co/duxadikoti/ha3GIhO/how_to_update_software_on_ipad_mini_3.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/icjhOha/epic_battle_simulator_2_cheats_2020.pdfIn PDF document text
    • https://kiwogadewabinox.weebly.com/uploads/1/3/4/0/134017617/ddc462453.pdfIn PDF document text
    • https://zekigoduse.weebly.com/uploads/1/3/4/3/134336209/nakutubesapotub_kokiloborobede_rowerubowegole_dagamubijapafe.pdfIn PDF document text
    • http://zusiwibewire.mypressonline.com/oxford_practice_grammar_with_answers._advanced.pdfIn PDF document text
    • https://sisezapude.weebly.com/uploads/1/3/1/3/131398367/44dfdae9a19513c.pdfIn PDF document text
    • https://cdn.sqhk.co/sirobuse/ji5PggL/evertech_sandbox_pc.pdfIn PDF document text
    • https://jikezukirex.weebly.com/uploads/1/3/1/3/131383594/totixokodoji.pdfIn PDF document text
    • https://pusenosate.weebly.com/uploads/1/3/5/3/135347115/6061024.pdfIn PDF document text
    • http://voxivinojoniriz.22web.org/how_to_put_back_together_an_evenflo_car_seat.pdfIn PDF document text
    • https://gigerexug.weebly.com/uploads/1/3/5/3/135341911/silededasemowuwavi.pdfIn PDF document text
    • https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/vanirugumuruxavoro.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/vexon.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/54973345618.pdfIn PDF document text
    • https://rofikilidoxomuk.weebly.com/uploads/1/3/4/0/134017179/mumojugavawifiratafo.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/bokofapig/40769346779.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/what_comes_under_banking_operations.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/52748701876.pdfIn PDF document text
    • http://webubekesivamuf.epizy.com/activesheet._pictures._paste._select_error_1004.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/mikidobiwax.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/marketing_plan_template_word_doc.pdfIn PDF document text
    • http://wejivitekep.epizy.com/38122330264.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/41643093398.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D5 5624 bytes
SHA-256: 08b5805b15e563ddb3a5879d1ac77320bcd216b4f36274d4e8cea6e6d3155d79
font_01_sfnt_off000109ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CA 10452 bytes
SHA-256: c7bb73a798ecd7fb6a44c6ece75d8100c45587f97958cb41e34915bb6028f404

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