Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd66d3e8cf5fd8b…

MALICIOUS

PDF

69.1 KB Created: 2021-02-15 10:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 58c8b804401c8e4509e106343b4dacd3 SHA-1: 3aefa2a203740a149b4a3315d28a8f9cf3b651fd SHA-256: 0cd66d3e8cf5fd8bac52ed8d91083db523437e1be45cc702f641bf23ece47a15
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=poe+shaper%2527s+orb+guide PDF link annotation
    • http://copyrightsupport-ig.com/idsa_guidelines_intravascular_catheter-_related_infectionsb4vtb.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/f8LO7id/kekukatabev.pdfIn PDF document text
    • http://kesenirevapovid.iblogger.org/kaththi_sandai_movie_in_single_part.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/jevokevujusinufakijurolubnyisv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501212/normal_5ff3e94e4c585.pdfIn PDF document text
    • http://lienforkid.com/mtg_first_strike_deathtouch_rules45yza.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/secure_notes_private_notes_and_listsu8sl4.pdfIn PDF document text
    • http://dnepr24.info/dharmashastra_ka_itihasz11sz.pdfIn PDF document text
    • http://dreabling.online/program_activate_windows_8._1_pro3y4kb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461201/normal_5fd8271bdaa21.pdfIn PDF document text
    • https://cdn.sqhk.co/fotinegataso/gfYjjjb/1870037250.pdfIn PDF document text
    • http://ketrovk.xyz/abrahaminte_santhathikal_song_maango_me4l5mb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464732/normal_5fe2685cb2d2d.pdfIn PDF document text
    • http://bottlechainworld.com/bigo_live_beans_hack_androidms3n3.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/oUgihge/jumping_frog_toy_for_dogs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457302/normal_5fd62c947c917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_600fa65475b55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sobogasitizi.epizy.com/soundcloud_playlist_er_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/56146481434.pdfIn 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_off0000d18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18F 5364 bytes
SHA-256: f4d52c05b4b7f5aded874c1740b78dabd7d75d23ef14664f527c963945a3753c
font_01_sfnt_off0000e3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C6 10452 bytes
SHA-256: dece2c1bc3684727e928eea7a60123c7b99d446c53e483f20252fe9e7ef4a39b

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