Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2aa937713c88034…

MALICIOUS

PDF

66.1 KB Created: 2021-03-01 08:51:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c22082861a08001a23fdc535b3a62e50 SHA-1: c0d1e8a808f123977f4f5a3b7cc9b2d64041b0c4 SHA-256: c2aa937713c88034b23a2b02197455e045db69ed29bf0d5b0a9091a28f395a84
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://resalured.ru/award?keyword=master+book+of+candle+burning+page+66 PDF link annotation
    • https://cdn.sqhk.co/nezusoxe/0ZDger0/sdbh_world_mission_prison_planet_saga.pdfIn PDF document text
    • https://tulaliferejuza.weebly.com/uploads/1/3/0/7/130775137/ac212f0467e407.pdfIn PDF document text
    • https://cdn.sqhk.co/ronobiberagu/gigrkXJ/wujerurijipetot.pdfIn PDF document text
    • https://dobopekajami.weebly.com/uploads/1/3/4/3/134314215/50daee.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/ghbVhg9/ping_pong_masters_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/gcOiija/24656921903.pdfIn PDF document text
    • http://realwockyc.info/vers_l_criture_gs_acces_gratuitwiwnw.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/muwekemonaxexofubumawik.pdfIn PDF document text
    • http://top-agent.ru/hebrew_bible_translated_into_englishzb10m.pdfIn PDF document text
    • https://melesanej.weebly.com/uploads/1/3/1/1/131163783/fd8cec218c30.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/tuzamada/gadekojepuxi.pdfIn PDF document text
    • http://bumerezuwo.epizy.com/fuzikesosowotusalepipe.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/62747638351.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_off0000c4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F6 5688 bytes
SHA-256: b8f22148b3843711702059e72d4dd27269e8a88480a9ce604b2a4c70c3aebcf7
font_01_sfnt_off0000d86b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86B 10264 bytes
SHA-256: 55586fad21441b46ce8e2a77529b69be839036b2724c60da6098d790f6a7f842