Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c4cdb37a4dcaaf…

MALICIOUS

PDF

80.2 KB Created: 2021-03-18 14:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08215675d9872b01f70e800c2abfe451 SHA-1: dd90a6ee4028079da0caa677eaaa9bea8378ca62 SHA-256: 92c4cdb37a4dcaaf2036cb01e74a4741c4dbaabd94b61e8db6d63507b330285a
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high ML score and ClamAV detection, indicating malicious intent. The embedded URI points to a suspicious domain, likely serving as a lure to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, potentially exploiting PDF vulnerabilities.

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://seumenha.ru/wix?keyword=riddle+school+5+number+pad
    • http://myimperfectmomlife.com/20192870600f8erm.pdf
    • https://siropenisawad.weebly.com/uploads/1/3/4/3/134353493/823a74826b25b.pdf
    • https://rujizubag.weebly.com/uploads/1/3/0/7/130776042/sufixivajuxexo_xetifomemapi_wefazebebugof.pdf
    • http://5gusevshop.space/88823306099je9u0.pdf
    • https://zojezuma.weebly.com/uploads/1/3/1/3/131382028/3708535.pdf
    • http://copyrightsupporteds.com/houseparty_games_reviewnsc12.pdf
    • http://copyright-rules-help.com/the_7_undisputed_letters_of_paulpzz9q.pdf
    • http://freshnatur.fun/49613215581y9l9d.pdf
    • https://xogepavawoda.weebly.com/uploads/1/3/0/7/130740110/4095660.pdf
    • http://itclick.info/what_is_a_netgear_prosafe_5_port_gigabit_switchi4kpc.pdf
    • http://hesap-al-sat.com/la_gazzetta_dello_sport_f1_collectiontoujy.pdf
    • http://vumamanepu.sportsontheweb.net/49285088423.pdf
    • http://maska-respirator.com/retroarch_mame_coresu3qqb.pdf
    • http://rijigikesezaga.mypressonline.com/1524437109.pdf
    • https://duxotitur.weebly.com/uploads/1/3/4/5/134596147/6bae4785b8f.pdf
    • http://idealicaitalia-official.site/zen_williams_pinball_volume_6d14h5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xukonakefules/conjunctions_exercises_with_answers_for_grade_5.pdf
    • https://s3.amazonaws.com/gixirojozogufux/free_intro_template_adobe_premiere.pdf
    • https://s3.amazonaws.com/midizaxopazeji/wezutogamugakodul.pdf
    • http://mugomodag.atwebpages.com/41838570657.pdf
    • https://s3.amazonaws.com/kotidox/6761146038.pdf
    • https://s3.amazonaws.com/vinivuxo/free_intro_video_templates.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_off0000f702.bin
debb1fbebe99d3089a431210c033beda656bb70b32e180da60219c45660965bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF702 5584 bytes
font_01_sfnt_off000109cd.bin
ab3673bc199c041639d03f47238374b9fa00e6f956f396464e5c3d83b24b57b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x109CD 11936 bytes