Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c2ce3ffc493938…

MALICIOUS

PDF

69.7 KB Created: 2021-02-11 15:31:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 74e26feecfd2e9cdf8150dad793ca3f1 SHA-1: c5a7d009b371ce47a1ff89f18ddb06ec8a9a74f6 SHA-256: 22c2ce3ffc493938b21e7061b380e4301c8a5bd7c0337d1ed64c834f85cbc0f0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=cartoonizer+app+free In PDF document text
    • https://cdn.sqhk.co/nujidegowupi/jic1jeD/foosball_table_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/igjCXce/mibaguwuwunuv.pdfIn PDF document text
    • http://sojarenenu.iblogger.org/a6_greeting_card_template_indesign.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419195/normal_5fc78e07b5bef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383340/normal_602208434705e.pdfIn PDF document text
    • https://cdn.sqhk.co/gabixeme/cgiCgD8/fashionista_dress_up_challenge_3d_game.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/4oxibPc/levitusobupuzuzexumuju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://digasima.rf.gd/android_choose_picture_from_gallery_intent.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/barack_obama_speech.pdfIn PDF document text
    • http://werolalijatet.rf.gd/22365249287.pdfIn PDF document text
    • http://wezojepodi.rf.gd/32534059438.pdfIn PDF document text
    • http://joriboka.epizy.com/city_skylines_dlc_guide.pdfIn PDF document text
    • http://fudewalazakukug.epizy.com/89095713521.pdfIn PDF document text
    • http://jovelabomitom.epizy.com/bupatuvojenirizegitifago.pdfIn PDF document text
    • http://puwojewemuxa.epizy.com/31486935001.pdfIn PDF document text
    • http://vixugow.epizy.com/74264338315.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/google_academico_tesis.pdfIn PDF document text
    • http://ripapekum.epizy.com/energy_problems_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_off0000d675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD675 4640 bytes
SHA-256: 4c7dd1c0cb15c8862b01d3f33035b4a6c4acc253c3abbead6a5f923077ec776f
font_01_sfnt_off0000e656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE656 10460 bytes
SHA-256: b24dbccb31cd54115832e4896337060469090b3ea1a75004ef6edaeebd0ae0d3