Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52bb0434541f430…

MALICIOUS

PDF

71.8 KB Created: 2021-01-09 23:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 55967c90a6d2074affea7cbfeff59c18 SHA-1: 409a71e59ecc3dbac914e6c01a0e4992776772eb SHA-256: d52bb0434541f430c6a545e06cba59491010fafc2c5e97e1931fab1f293e6ed6
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://trafficel.ru/mozel?keyword=employee+attendance+tracker+template PDF link annotation
    • https://gifetapajuloper.weebly.com/uploads/1/3/4/6/134682222/4080406.pdfIn PDF document text
    • https://mejefarekobuk.weebly.com/uploads/1/3/4/3/134338461/1890615.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/S1SY10W/86010431276.pdfIn PDF document text
    • https://pukadove.weebly.com/uploads/1/3/4/6/134694451/nalujizesegafodazad.pdfIn PDF document text
    • https://site-1211946.mozfiles.com/files/1211946/cartoon_cat_theme_song_piano.pdfIn PDF document text
    • https://site-1177706.mozfiles.com/files/1177706/65552495671.pdfIn PDF document text
    • https://site-1175575.mozfiles.com/files/1175575/wellness_mood_tracker_happy_planner.pdfIn PDF document text
    • https://sajipetifejej.weebly.com/uploads/1/3/4/8/134883768/1171621.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/tyieaWw/96777216549.pdfIn PDF document text
    • https://cdn.sqhk.co/parapirer/5PKyjeM/farming_simulator_14_online_free.pdfIn PDF document text
    • https://site-1197494.mozfiles.com/files/1197494/39630961415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/85100041059.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/77982991994.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_off0000ddf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF3 5164 bytes
SHA-256: dee9289263cb93becd246b20485c0485375893724b24f609474af34ed56f40a8
font_01_sfnt_off0000ef78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF78 10128 bytes
SHA-256: b31470d60aa80dd5081cf8ccd6dd6ac3dbbf2979ce0e3aca286430a847a77003