Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9034913ff6d0b8…

MALICIOUS

PDF

76.5 KB Created: 2021-03-04 23:27:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be8ad383535434f2da35fb8642f59667 SHA-1: d2c728cbf9885f76d295f1ced77b49200ec1a36a SHA-256: 3e9034913ff6d0b8b0f6957c8c3a589b14517e1e8ac2a3bd372d47f1f72bc6d4
134 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous external links, many pointing to disposable domains, suggesting a link farm designed to obscure the ultimate destination. The document body, though heavily obfuscated, appears to be a lure related to rhetorical devices, likely to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/strik?utm_term=what+rhetorical+devices+are+used+in+speeches
    • https://vopupina.weebly.com/uploads/1/3/1/0/131070761/sodadopiwivezir-dogugobuwo.pdf
    • https://tujarabevazedi.weebly.com/uploads/1/3/4/2/134235746/9976840.pdf
    • http://belegowu.iblogger.org/how_to_forward_calls_using_avaya_phone.pdf
    • http://lenuvivureropi.scienceontheweb.net/que_funcion_tiene_el_sistema_endocrino_en_nuestro_cuerpo.pdf
    • https://kawifapexevudo.weebly.com/uploads/1/3/4/7/134711131/potademunepagiv_pudiluf.pdf
    • http://dakisemakegag.sportsontheweb.net/78706459114.pdf
    • https://takatika.weebly.com/uploads/1/3/4/6/134605824/b48ae562e5968a.pdf
    • https://static.s123-cdn-static.com/uploads/4489414/normal_5feb5436527a9.pdf
    • http://mumidiw.22web.org/54963194845.pdf
    • https://static.s123-cdn-static.com/uploads/4501383/normal_6006d3ab56949.pdf
    • https://static.s123-cdn-static.com/uploads/4467274/normal_5fcef3c55934e.pdf
    • http://wurilozi.scienceontheweb.net/kitchenaid_ksm150_artisan_stand_mixer_-_empire_red.pdf
    • https://static.s123-cdn-static.com/uploads/4472186/normal_5ffbbd4a91b7d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bivanud/55297794846.pdf
    • http://nobidaponofuxul.epizy.com/72415947079.pdf
    • http://duxejuxaxeze.epizy.com/maytag_portable_dishwasher_mdc4650aww_manual.pdf
    • https://uploads.strikinglycdn.com/files/214285ff-6196-43d8-863f-c1a9121bc1e6/do_you_need_a_dvr_box_for_comcast.pdf
    • https://s3.amazonaws.com/pajeriramal/kickboxer_full_movie_tamil_dubbed.pdf
    • http://gurabagoderes.atwebpages.com/how_to_fix_sewing_machine_stitch.pdf
    • https://uploads.strikinglycdn.com/files/5eac66f8-cdc2-4158-b14e-a92f4100e7e6/soditudaruwexobarus.pdf
    • https://uploads.strikinglycdn.com/files/9d9cdf0e-6df0-4dd5-bf66-108d495f00df/kenmore_80_series_washer_agitator_not_working.pdf
    • https://uploads.strikinglycdn.com/files/c2ed41bd-2e6f-4628-a12c-95ded66d7130/how_to_write_a_restaurant_review_on_yelp.pdf
    • http://sosasofojatage.epizy.com/linelumodukeji.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1c.bin
b269ae2d86da627c99999a99e4c4acdcb5352abc671a75273380f4be4b9e6d2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1C 5232 bytes
font_01_sfnt_off0000fff3.bin
5f63a4a40b0b2264cdd2560b76f20ab952ca87fc841bb88facbe5bd3def6a967		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF3 10596 bytes

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