Malicious PDF — malware analysis report

Static analysis result for SHA-256 00dcde603714ffdb…

MALICIOUS

PDF

74.0 KB Created: 2021-04-02 17:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 982cb9b7532591e0265af1cfa9faf3c2 SHA-1: 7d01f241bacd1075d4a983fd616a6ab07bfada0d SHA-256: 00dcde603714ffdb8c28aea39cc87403e38659114a51e0df2fda14319b779945
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as a link farm and is detected as a phishing trojan by ClamAV. It contains numerous external links, with the primary one pointing to a URL that appears to be part of an SEO scheme. The ML classifier also strongly indicated maliciousness, suggesting the document is designed to lure users to potentially harmful content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/award?keyword=bsc+scheme+2020+agra+university+pdf+download PDF link annotation
    • https://cdn.sqhk.co/wanevakaxuma/hdhMgh3/xepor.pdfIn PDF document text
    • https://lonurosoriwe.weebly.com/uploads/1/3/5/9/135985322/932579.pdfIn PDF document text
    • https://vazemewezasal.weebly.com/uploads/1/3/0/7/130775722/7103698.pdfIn PDF document text
    • http://xebubux.sportsontheweb.net/what_will_happen_to_your_eyes_if_you_cry_too_much.pdfIn PDF document text
    • http://bukawavado.medianewsonline.com/obc_caste_form_rajasthan.pdfIn PDF document text
    • https://lilugotowo.weebly.com/uploads/1/3/2/7/132711957/pupekoderiti.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/MieFNXL/12639690396.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd2a8927-03d9-4c45-aa2d-ac8965cbc8ee/sukorusoxuro.pdfIn PDF document text
    • https://59b7e61f-9850-45ee-add2-e9646db267e4.filesusr.com/ugd/5b9365_5f422dc99c5a485ebe53c6f45e27c61d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/45dd701f-a08f-4737-bba8-b4f8ac4561ce/cant_find_google_play_on_my_phone.pdfIn PDF document text
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_55dfb1484c664003952e277cbc768fe1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/airfoil_commander_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12555475-7ae2-4995-a0da-f5911fb4594c/53669295872.pdfIn PDF document text
    • https://5849b288-062f-49f8-a71b-da420f1f00fd.filesusr.com/ugd/c068f8_bff951144b724f98851754ecca2ed96a.pdf?index=trueIn PDF document text
    • https://27a83426-c768-4525-a63d-b5b732cca755.filesusr.com/ugd/28b3f7_07df4de44b1f4a15b83dec5b5ee284bd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/car_racing_games_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/22412022757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10c264f2-f9a2-4c68-91e9-8292dfebc964/4389284777.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_off0000e24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24A 6148 bytes
SHA-256: 2d1df945870f379a734e5fdcc3f26334d16ee0c67ebf9a91b7990110905d1771
font_01_sfnt_off0000f72b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72B 10440 bytes
SHA-256: 4f332d767b162c0831f713ad41ce96f1f5cebf27644f808d31c331f32fe2c220

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