Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b07084fca55caa2…

MALICIOUS

PDF

72.7 KB Created: 2021-02-03 19:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37d87f6a494023f6ce36a821b7835f6a SHA-1: 07fe87cbb03ee89fbcecdd2154e10638f295811e SHA-256: 0b07084fca55caa2f3251ab91a9da9d04678310c8337b3a8b33fb7f108c2fa3e
186 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 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://seumenha.ru/wb?keyword=gi%20jane%20imdb%20parents%20guide PDF link annotation
    • https://sikefenuvip.weebly.com/uploads/1/3/4/0/134012601/1916580.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/hh2iLKH/jugujaxomo.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/iFwhgfN/live_video_camera.pdfIn PDF document text
    • https://buruwezixefekiw.weebly.com/uploads/1/3/0/7/130738548/badugekovedipetiveze.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/58pjbZe/hku_terra_nova.pdfIn PDF document text
    • https://vimanofadubob.weebly.com/uploads/1/3/5/3/135304206/d0792399c46e70a.pdfIn PDF document text
    • https://cdn.sqhk.co/fusajovogi/vhegAhb/ice_cream_cone_making_machine_in_kolkata.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475215/normal_5fc7f7ddb594d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5fe817ca17f01.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/kunifotazukoji-wepes.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/gehaTHz/zegepibojam.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/tinivukedeta/homogeneous_transition_metal_catalysis.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/40009992015.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/behavior_tracking_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/phase_variable_canonical_form_matlab.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_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 5492 bytes
SHA-256: 1b779a8577319cbff863f772fd4f9b81a20a1951cbf7b7fa48414160cd432279
font_01_sfnt_off0000f24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24A 10544 bytes
SHA-256: 53e385ed9d5e1b475cfcd96e34b73d79359e1b540bffffc8fa643373a43ac683