Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7539d3928983e79…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 03:02:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 08c04de732355e9dc12a81178e2d9755 SHA-1: da965ad40fd594c9db3b74e7a58cd5d7b250870d SHA-256: c7539d3928983e7989bb1441cf98820348cee6a1662fb59d80f1b6f84296731a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wb?keyword=break%20my%20heart%20again%20lyrics PDF link annotation
    • https://cdn.sqhk.co/salasereki/ijArgjj/golawu.pdfIn PDF document text
    • https://cdn.sqhk.co/dufukeraj/Kjchchb/magic_puzzle_quest_planeswalker_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/7gdgfhh/maforidet.pdfIn PDF document text
    • http://svoytrylend.xyz/ivry_sur_seine_code_postalgm9d4.pdfIn PDF document text
    • http://hallop.xyz/transformar_1500_hectares_em_metros_quadradosk7xtf.pdfIn PDF document text
    • http://mamontov-net.cc/bell_tent_sewn_in_groundsheet7oi9h.pdfIn PDF document text
    • https://cdn.sqhk.co/jalizovi/iijgjiy/dark_sword_2_mod_apk_latest_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386842/normal_60245783e270b.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/crazy_craft_mod_1._145qgyx.pdfIn PDF document text
    • http://avit0.cc/how_to_delete_cydia_apps_without_cyd1ow5j.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/YjMhTf5/wulexij.pdfIn PDF document text
    • http://mini-camera-super.club/23528967985uql1v.pdfIn PDF document text
    • http://avit0.pro/folilofurefetls25i.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/hjjJgfD/secret_codes_for_kart_kingdom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kalotiwinilobiw.epizy.com/lojavenivobu.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_off0000dc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC16 5428 bytes
SHA-256: b8081381168ffac30f446ae6052d5e6faec7c7d1a951d24d243def758c9ea797
font_01_sfnt_off0000ee74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE74 10432 bytes
SHA-256: 18502c51050699f51e28a4d13173bdf3c96b8557301c39e63c4b0ae62842af3d