Malicious PDF — malware analysis report

Static analysis result for SHA-256 7978a9d204cc560f…

MALICIOUS

PDF

67.4 KB Created: 2021-03-03 01:01:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9273f05d6e5ccb3201046965de134a8e SHA-1: ff0fc1d232ea708f9e8e6994cda676d3bbe7168e SHA-256: 7978a9d204cc560f6e4fb3b07efc2e8fe284c7810a7fde6f9e5f6396ab3203a7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/award?keyword=how+to+get+nec+phone+off+do+not+disturb PDF link annotation
    • https://zakewurez.weebly.com/uploads/1/3/4/4/134471700/6620857.pdfIn PDF document text
    • http://fusobilel.iblogger.org/dawin.pdfIn PDF document text
    • https://fujolununepa.weebly.com/uploads/1/3/4/6/134683680/larixixuwala.pdfIn PDF document text
    • https://suzabotofofetab.weebly.com/uploads/1/3/4/7/134739937/wenuguganevowa_wixedezobukel.pdfIn PDF document text
    • https://xawajedub.weebly.com/uploads/1/3/4/8/134886715/jatitezunoko-xijosuvevo-silezododovewur-lajos.pdfIn PDF document text
    • https://wolagevujizerul.weebly.com/uploads/1/3/5/3/135316080/1693044.pdfIn PDF document text
    • https://dapobirot.weebly.com/uploads/1/3/4/8/134888013/motijowidazir.pdfIn PDF document text
    • https://cdn.sqhk.co/tijovomiv/jgV9xcs/99629238442.pdfIn PDF document text
    • http://radapox.iblogger.org/what_is_set_in_python_with_example.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/SMUahbv/luponepasutivelolipig.pdfIn PDF document text
    • http://nuredalad.iblogger.org/81512726549.pdfIn PDF document text
    • http://damisidituwupo.iblogger.org/terabobajiji.pdfIn PDF document text
    • http://tegekagag.22web.org/wow_classic_level_guide_alliance.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/PyjbYjb/slide_away_oasis_lyrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://danofawo.rf.gd/minnie_mouse_red_bow_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/fender_acoustasonic_150_amp_manual.pdfIn PDF document text
    • http://pimifemegizak.epizy.com/hematology_exam_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/paresakipofuped.pdfIn PDF document text
    • http://zerujafulo.rf.gd/wow_assassin_rogue_pvp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/salem_witch_trials_video_worksheet.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_off0000cbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE1 5368 bytes
SHA-256: ac8fabf0884d5996fbefba367350781515e267d46b878e4ce02bec44b009cc37
font_01_sfnt_off0000de38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE38 9968 bytes
SHA-256: 616938417adbcb952f73a5a7bfdac52860d0908b5c8c0fdcb3966f7f002685cd