Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e765fe00a43b291…

MALICIOUS

PDF

73.2 KB Created: 2021-03-06 06:08:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bdb462eec7542007a8052efc9ff262f1 SHA-1: 59728da4651137baf7d10a57e37ec3731051742e SHA-256: 8e765fe00a43b2910b06cf90f10c987736f2c9a114bfca1078883f5c7efbd12c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/wix?keyword=dansko+shoe+size+chart PDF link annotation
    • https://cdn.sqhk.co/jivazufevi/ahjtpXo/notepad_macro_path.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/ifngcif/game_uphill_rush_6_hacked.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/mta_subway_map_new_york.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/97b1e843-f9f0-422b-b0b5-2806314a2b38/avatar_the_last_airbender_comics_order_free_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3031c3bd-4613-496c-b13c-9b898db68fb7/6412275239.pdfIn PDF document text
    • https://a84030a7-2e48-4039-807a-383e2b7216cc.filesusr.com/ugd/c5d40f_93d2861c5b234b2b9d04ce2214e613a5.pdf?index=trueIn PDF document text
    • https://04a80c79-134c-446e-801b-0c1635678e59.filesusr.com/ugd/5cebf8_b62e0bcf8ba34f58b025f69325fe0ba9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab6daed8-d5da-43f1-8efd-e707b3e4036a/polaris_sportsman_400_2_stroke_carburetor.pdfIn PDF document text
    • http://duwemanuwixam.atwebpages.com/vopibusatexoduvaluwigiwu.pdfIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_f07d843804c74663aafc270d84284bf7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad7dd74-3138-4e74-a4fd-5afd05400adf/dungeon_masters_guide_ii_3.5.pdfIn PDF document text
    • https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_832e7a8de5884bea929517a49ba03f86.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/09bd4fc4-1180-45df-ad72-1721bb6e498b/gesevupopixaduwerifabogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282398f5-2742-469b-aa3b-2877eae85539/sizumel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/308b2c20-b4ea-4b7c-afdf-b80153b0fa4d/how_to_factory_reset_hp_elitedesk_800_g1.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_off0000e2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E6 4968 bytes
SHA-256: b785d21a3d7dfa54a9af11bc0ec89ecaec7e574772d2912b4e5e76ca3cca6d62
font_01_sfnt_off0000f3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 10640 bytes
SHA-256: 0629fb1ca591e8c8ce4b63c08255d4201aabe48313199e02bb4d0ccd0b53b2e6

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