Malicious PDF — malware analysis report

Static analysis result for SHA-256 088d9a1d128eba48…

MALICIOUS

PDF

73.2 KB Created: 2021-02-23 23:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d7b9c74fb770e985f1f150be1412d575 SHA-1: ed83d812d29f9ded672659dfe3f9a9b0beb90ed5 SHA-256: 088d9a1d128eba4874db2b91657432f576201ceb2f127a9828b3d7603a5d8105
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than 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.
  • 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://yafferge.ru/wix?keyword=craigslist+nashville+tn+cars+and+trucks+by+owner In PDF document text
    • https://cdn.sqhk.co/jawuraxexije/YejeAhe/4k_wallpaper_auto_wallpaper_changer_apk_download.pdfIn PDF document text
    • http://biomanix.best/olympus_om-2s_review1e53c.pdfIn PDF document text
    • https://cdn.sqhk.co/nisifowisom/HhfTgch/woruxi.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/idijgeo/dinosaur_hunting_games_fps_shooting_sniper_guns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459937/normal_5ff2823b7d010.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465688/normal_5fc9a6199a10e.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/Uijiihh/napusuxu.pdfIn PDF document text
    • http://poradoit2.site/wazasusegezejuphl7m.pdfIn PDF document text
    • http://busotokebos.iblogger.org/79687923356.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418362/normal_5fddbfc4649d0.pdfIn PDF document text
    • http://speak4pro.com/mini_golf_matchup_keeps_crashing37mh0.pdfIn PDF document text
    • http://romeital.space/fallout_4_subway_runner_map6b6su.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rajemezipuz.rf.gd/38017052069.pdfIn PDF document text
    • http://xufeguwopox.rf.gd/12342899546.pdfIn PDF document text
    • http://kixelekiteduxaz.rf.gd/filehippo_itunes_free.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_off0000df98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF98 5564 bytes
SHA-256: 40dbea128e4e1f389e03ddbc29cc8bd7ffaeb7209375d4b45e8e80391bfaa29c
font_01_sfnt_off0000f290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF290 10920 bytes
SHA-256: 3568cacc9790a0005bf4d0496f72c1dcde16add2d5c11d81a1c617f1d5f4834a