Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19c32702ecd1021…

MALICIOUS

PDF

74.8 KB Created: 2021-03-24 06:50:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33141ea34d63de91e95bb9a53acf200f SHA-1: 15d656cb404484331aecaa94dea6d0b4dac7db26 SHA-256: c19c32702ecd10210f0466710fd1d91b3c66e5afee2422fd19ad256274f37dd5
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a phishing lure related to academic writing. ClamAV and ML classifiers strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to a malicious site, likely for phishing or to download further payloads.

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://jacksth.ru/award?keyword=sword+stylish+academic+writing+pdf
    • http://rawiduti.medianewsonline.com/6114494245.pdf
    • http://nipizakevenuvis.scienceontheweb.net/sozipasorupebibaz.pdf
    • https://cdn.sqhk.co/madilaxetevo/jfhdjeQ/extreme_car_driving_simulator_hacked_version_apk_download.pdf
    • https://cdn.sqhk.co/libarazituw/fUihmCb/mexican_ice_cream_shop_near_me.pdf
    • http://fuwiduwoxobol.mygamesonline.org/breakfast_at_tiffanys_restaurant_san_francisco.pdf
    • https://xezatitewifesel.weebly.com/uploads/1/3/4/3/134393938/5420005.pdf
    • https://patewowuxafopon.weebly.com/uploads/1/3/4/5/134595548/rakefo.pdf
    • https://cdn.sqhk.co/tokarikadez/i9ySvhg/falcon_9_launch_today_countdown.pdf
    • http://risejesifisem.22web.org/louis_jadot_pouilly_fuisse_2017_tech_sheet.pdf
    • https://cdn.sqhk.co/rurokusulos/3J4ggex/frontline_commando_d-_day_download.pdf
    • https://vuvonuzomuvi.weebly.com/uploads/1/3/4/5/134508102/3078be6a6d92d6.pdf
    • http://ladujose.sportsontheweb.net/72933752298.pdf
    • https://cdn.sqhk.co/vagofedewat/aHihejh/95120225262.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/retisovojor/baby_shower_invitation_card_design.pdf
    • https://f421159b-d329-41e8-bc42-072bc93e4c50.filesusr.com/ugd/65d6f7_95f83557a34749a1b16a394cdb63495f.pdf?index=true
    • https://s3.amazonaws.com/xalexojaxipud/velifironexupojubujo.pdf
    • https://6346cca1-8be9-442e-91e0-e35201572fa6.filesusr.com/ugd/a8c077_501707c7da8c4927bfa7f3d74ffb95ae.pdf?index=true
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_78136b1fef37483a91c6cef16a890271.pdf?index=true
    • http://birukuf.onlinewebshop.net/ccvc_word_list.pdf
    • http://kusofiwu.epizy.com/9572228865.pdf
    • http://bifutebapeji.epizy.com/73052077891.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_off0000e5ee.bin
e20d6593616cb012874da26feed83b1d89960a12eb1c722c2dcf97bdf019238b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EE 5864 bytes
font_01_sfnt_off0000f9d3.bin
deed3018117606ed78e1763e05bb8793cfba103b0b290872767cc1b763960167
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D3 10572 bytes