Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9dea629d91ade48…

MALICIOUS

PDF

73.7 KB Created: 2021-03-02 11:37:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6ab8f8825e8dade3a93808622de51541 SHA-1: a24112033d859a5d654fc0c035f5d374ac2ed61c SHA-256: c9dea629d91ade48db39cd56bff6c6836885e97cead7ec8a0d683a6c99624b71
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • 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://druttle.ru/wix?keyword=dr+dre+compton+album+free+download PDF link annotation
    • https://cdn.sqhk.co/vewukiziwemi/vOhhhg5/dobijunoreritates.pdfIn PDF document text
    • https://bapuporodotuxo.weebly.com/uploads/1/3/1/3/131381531/mipagimawizolerub.pdfIn PDF document text
    • https://bagawilikazukir.weebly.com/uploads/1/3/1/0/131070307/fumovofaw.pdfIn PDF document text
    • https://fanarise.weebly.com/uploads/1/3/4/3/134377412/316298.pdfIn PDF document text
    • https://segawalapuk.weebly.com/uploads/1/3/4/9/134902876/25220c7edcd7f.pdfIn PDF document text
    • http://cuzinfo.ru/nikon_coolpix_l22_digital_cameraw7a7s.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/h6iahih/air_hockey_classic_hd_2020.pdfIn PDF document text
    • https://gotowixupin.weebly.com/uploads/1/3/4/3/134393593/zabapus.pdfIn PDF document text
    • https://cdn.sqhk.co/revogonesox/nzcnCgi/xofinedidilimenibole.pdfIn PDF document text
    • https://sumulepali.weebly.com/uploads/1/3/4/8/134882140/7f4a77b5.pdfIn PDF document text
    • http://kufizuvepopes.22web.org/body_language_book_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sedozod.rf.gd/tefakajulejipobofokeb.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/kipemamizakojetugexogedi.pdfIn PDF document text
    • http://mezajuwobit.rf.gd/17322261335.pdfIn PDF document text
    • http://rabatelekovufar.myartsonline.com/turuzuxexikunomuf.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_off0000d8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B1 5356 bytes
SHA-256: bb7d1808870a405702508aa13befeb404cefecae782b03171f5007b704ce2cfc
font_01_sfnt_off0000eae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE1 14888 bytes
SHA-256: e1c49659c047fa647a21267656f4437570b9f6e36303b43c5297b7d37136ddf8

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