Malicious PDF — malware analysis report

Static analysis result for SHA-256 175ceaa2c8212141…

MALICIOUS

PDF

72.2 KB Created: 2021-02-21 05:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8218ce84676b4c8d9b97cabdde051bc7 SHA-1: 5b3cd6d768417221ada3b4b1d9e507e7d6e209e0 SHA-256: 175ceaa2c821214199b8f2e0494aca96fad4a6a94c57f5cbaf494732dcd3f109
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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=whack+your+girlfriend In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375080/normal_6018f6581331e.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/jj2jcXG/67311746020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5ff2bba8dcef1.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/iabwUwU/53953705485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379960/normal_5fd174a69f5dc.pdfIn PDF document text
    • http://kushtanash.ru/lenguaje_musical_melodico_1_ediciones_si_bemol_descargar9jrme.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/giUgeid/nissan_skyline_gtr_r34_wallpapers_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/jekRijT/agar._io_mobile_live.pdfIn PDF document text
    • https://rigivopamakor.weebly.com/uploads/1/3/4/8/134869382/dfe9adb0d28a776.pdfIn PDF document text
    • https://fofapisobav.weebly.com/uploads/1/3/4/7/134712410/xitabodapamo.pdfIn PDF document text
    • http://dkblogin-de.com/cabify_vs_uber_preciosxzurz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_600f11015212e.pdfIn PDF document text
    • http://topcreditscore.info/jejoropukuoqz34.pdfIn PDF document text
    • http://itwow.info/kexakidaxumipasivird9bc5.pdfIn PDF document text
    • http://neojust.ru/46728325302gp35b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424347/normal_5ff62a1508369.pdfIn PDF document text
    • http://g2am2e.xyz/72744304507hexwv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424328/normal_5ffa94b17e4fc.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/dQieicX/90197913066.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD20 5284 bytes
SHA-256: df9b5d958fdab32f0e3df3749d8a7b5c848b978066fe3df504cc2e34ea8bcc5c
font_01_sfnt_off0000ef2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2A 10692 bytes
SHA-256: 0e85ddac72dfb45aad9d1479ffe9454623dc294d0fdd14cb962d2dac16013d74

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