Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd41340143a3f907…

MALICIOUS

PDF

67.0 KB Created: 2021-03-30 02:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4e07d5d29dae9a98b0eb2841dff8e17 SHA-1: 751ca536bb299a15b2e6c1915e756f84b39596a2 SHA-256: cd41340143a3f90705f629ab75546503c5e718446283b65c077894ec81e052f6
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Navy blue coat ladies', indicating a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/aws?utm_term=navy+blue+coat+ladies
    • http://pupezawat.scienceontheweb.net/fuwisowebejinewivifol.pdf
    • http://1green.space/dulces_mentiras_amargas_verdades_revelaciones_epubxx519.pdf
    • http://goodnatural.space/bosobagariredunogowaj6a21n.pdf
    • https://cdn.sqhk.co/xubewarow/fjejX6s/siwijubenixen.pdf
    • http://tinipen.medianewsonline.com/54484203224.pdf
    • http://takipibimaxubov.sportsontheweb.net/verification_of_bernoulli_s_theorem.pdf
    • https://cdn.sqhk.co/sevafeluba/jgjaiav/2d_shooter_games_xbox_one.pdf
    • http://gosoxegekiri.mywebcommunity.org/photographer_s_guide_to_capture_one_12.pdf
    • http://dipenoguzel.sportsontheweb.net/jidodijagataxolaxivoniz.pdf
    • https://cdn.sqhk.co/jivazufevi/jigNrl8/god_of_war_the_card_game_rulebook.pdf
    • http://byt-upak.ru/367344086541d58m.pdf
    • http://lapitubemexidi.mywebcommunity.org/runawegifexutikadivofarug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jusagi/self_determination_theory_definition.pdf
    • https://s3.amazonaws.com/pukiza/cuneiform_tablets_description.pdf
    • https://s3.amazonaws.com/kefodek/25731013347.pdf
    • https://s3.amazonaws.com/xeroguru/carl_jung_red_book_for_sale.pdf
    • https://s3.amazonaws.com/novifamigot/7621161175.pdf
    • https://s3.amazonaws.com/bokelur/maladies_de_l_appareil_urinaire.pdf
    • https://s3.amazonaws.com/vekodupiwarobi/megelifaburagenuzanaveba.pdf
    • https://s3.amazonaws.com/makumapikeze/95365047423.pdf
    • https://s3.amazonaws.com/zetituri/gabigofuxaxisa.pdf
    • https://s3.amazonaws.com/sefukirexuwekij/wimusakijomafatinotaril.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_off0000c97d.bin
68529811d2baa7a037f59d570d397fff8aa0493730bcc6df3155c65c3eb4f9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC97D 5108 bytes
font_01_sfnt_off0000dafe.bin
ecc6ce27bc161c1e104418ec734a965c02a6868aaa340c728845595ba7dff5ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFE 10108 bytes

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