Malicious PDF — malware analysis report

Static analysis result for SHA-256 084be6da9271bc93…

MALICIOUS

PDF

74.5 KB Created: 2021-03-02 17:53:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c8181e1b47630720cebce0bf4a3c02d7 SHA-1: f0b5d777640c61ff2211a4fe2d8d21734e676260 SHA-256: 084be6da9271bc9350dcef5247edcfc2592442dde20e6d6bc841e25145edd10f
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous links to external sites, many of which host further malicious PDFs. The document body, though heavily obfuscated, contains keywords related to housing assistance, suggesting a lure to trick users into clicking the embedded links.

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://leonvi.ru/wix?keyword=lds+housing+assistance PDF link annotation
    • http://kzrovk.xyz/88204226478mfqri.pdfIn PDF document text
    • http://armlur.space/difference_between_induction_motor_and_synchronous_motor7stxo.pdfIn PDF document text
    • http://evgeniy-semenenko.ru/79960386297hxjaw.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/how_to_get_audio_on_night_owl_cameras.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/hjagePH/fm_scout_wonderkid_list.pdfIn PDF document text
    • http://vuzetasavuxoso.mygamesonline.org/komazojizozulokowefawe.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/gcgfjdW/mekifofanuw.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/jdv4iil/border_light_wallpaper_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/litigoruf/efBhalm/buy_on_ebay_with_visa_gift_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/vekunego/aihLaL2/94086910915.pdfIn PDF document text
    • http://sberbank.link/985280912721uvyf.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/bulolimepol/nivodugelakibiriliso.pdfIn PDF document text
    • http://tefinavi.epizy.com/5850615145.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/asianet_broadband_plans_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/cute_cat_and_dog_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/jutav.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_off0000e82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82C 5016 bytes
SHA-256: 730314b7f37de228b665cca8715e001d8d293122f6043152c6bd76794cf956ce
font_01_sfnt_off0000f941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF941 10368 bytes
SHA-256: be7d115ac902e8c71555caf1b19bce75cd12e13ec22808961eaac6785ff9cfc2

Open this report in the interactive analyzer, or submit your own file for analysis.