Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48561a2858ed98c…

MALICIOUS

PDF

74.9 KB Created: 2021-03-04 03:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79c274c1769283375a9b62a5141d2eae SHA-1: 23ec4e8fd19396471c9482b0a72fc1276132378a SHA-256: a48561a2858ed98c0ab172ccb5543623f840fd283fb529dc20d9e73448ad8420
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious domain, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/123?utm_term=clasificacion+de+funciones+calculo+diferencial+pdf
    • http://allieshouseofhope.com/dwts_season_29_cast_rumors39d2q.pdf
    • http://leoidet.xyz/fizowivotejiwg45s.pdf
    • http://sell-toclick.online/nogatagozomibega8bu.pdf
    • http://obsluzhivanie-kompyuterov.moscow/doxikitx3mba.pdf
    • http://kfnwejfnkwheklf.space/guided_meditation_for_healing_back_paintq13y.pdf
    • https://static.s123-cdn-static.com/uploads/4456143/normal_5fe5ae80a702b.pdf
    • https://cdn.sqhk.co/zidodovare/gGiejbN/sikufalofetopokeve.pdf
    • http://tujukesabegakom.mygamesonline.org/98508496294.pdf
    • https://cdn.sqhk.co/zojixemem/6wdlid8/super_dragon_stickman_battle_warriors_fight.pdf
    • http://ximikilanad.22web.org/17191273850.pdf
    • https://cdn.sqhk.co/mezutowede/cIoCjay/67287061801.pdf
    • https://cdn.sqhk.co/gabebutiz/Txoc8if/21742261108.pdf
    • https://cdn-cms.f-static.net/uploads/4374178/normal_5fe7463f4f5d3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lojajute.rf.gd/how_much_does_a_bowflex_xtl_cost.pdf
    • https://s3.amazonaws.com/fenatagazise/handwriting_worksheet_alphabet_free_printable.pdf
    • http://dufofukitali.rf.gd/23748686152.pdf
    • https://s3.amazonaws.com/wixatax/bts_ly_answer_album_cover.pdf
    • https://s3.amazonaws.com/wixamupelinere/kanuvi.pdf
    • https://s3.amazonaws.com/lazolu/zyxel_mwr102_wireless_client_bridge.pdf
    • https://s3.amazonaws.com/dusubonifu/44238236922.pdf
    • http://meralilenizo.epizy.com/beautiful_red_roses_images_free.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_off0000e21a.bin
14db87eb146dfd87452b387a4204cb79456e7af89c390a80ea3f65c89954eba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE21A 5052 bytes
font_01_sfnt_off0000f355.bin
544eb16fe562c3a762d3c4beb4842c34452354aae10e308d71d553b1f9bad87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF355 12944 bytes

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