Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd104c3c1ad1e8ce…

MALICIOUS

PDF

81.3 KB Created: 2021-02-22 09:54:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 920a1ae5784139d2cc455c5845884dc3 SHA-1: ddc5566b874c2836b1b03298f675d1949c2b8265 SHA-256: bd104c3c1ad1e8ce87437e6864d7e8b1ec97c2f4ce09c9a9e6c109115d8f6cb7
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=what+type+of+genre+is+little+house+on+the+prairie PDF link annotation
    • https://cdn.sqhk.co/xenumobavun/hbPjbks/wildscapes_game_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/vwWgghh/age_of_war_game_center.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/chgDqia/16639870630.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/Qjfhfji/univision_noticias_en_vivo_hoy.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/EhjUFhc/55036043146.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/fhpKVib/life_simulator_road_trip_lifestyle.pdfIn PDF document text
    • http://damodudajipofem.22web.org/front_storm_door_for_mobile_home.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/GhehdXG/15712134548.pdfIn PDF document text
    • http://cosmicgig.com/71873276675dnzmy.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/mibaseferemaporifosutyokj5.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/baxinasunibu.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/gifhaSe/fivazuremiwumasonon.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/fqicUjd/osrs_easy_clue_casket_rewards.pdfIn PDF document text
    • https://cdn.sqhk.co/rijatazuga/dpC3tjh/72683179538.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/icjgggo/75270277230.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/SBUhe6w/63502436435.pdfIn PDF document text
    • https://cdn.sqhk.co/luwokiseg/fqHih5d/81683051480.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10076 5276 bytes
SHA-256: a7ca4c1d2d7fdb9de683b0adbc01156d28e282293e2d97312db0ada3f1155353
font_01_sfnt_off00011284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11284 10832 bytes
SHA-256: 4d802ae18ec8ecbcb2180b6f059857ed85ce35661767460b6ad28d97278a27fa