Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3c5496cb8d0d74…

MALICIOUS

PDF

72.3 KB Created: 2021-02-14 22:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0c8057552755dd5dd9d0874e99e2211c SHA-1: ae62e03446560ab53329059d42d8167a8a863f5d SHA-256: fb3c5496cb8d0d74a3d07732b08b237b0768551743772ccf9a7ea4755ad913c7
126 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
  • 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://jacksth.ru/wix?keyword=columbia+mo+summer+school+2020 PDF link annotation
    • http://mepanawabopod.22web.org/barbie_doll_dress_form.pdfIn PDF document text
    • http://juvugewit.iblogger.org/35906307213.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490547/normal_600159331850a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427785/normal_60019061570d3.pdfIn PDF document text
    • https://jorosovepi.weebly.com/uploads/1/3/4/7/134706332/6532249.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/axial_flow_fans_and_compressors.pdfIn PDF document text
    • https://ruwatavefi.weebly.com/uploads/1/3/4/7/134704280/9995789a0.pdfIn PDF document text
    • http://rivezetufizi.iblogger.org/69302656059.pdfIn PDF document text
    • http://keribek.22web.org/45192524101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373509/normal_5ff68f5baf6f8.pdfIn PDF document text
    • http://kubikox.iblogger.org/reallusion_character_creator_2.pdfIn PDF document text
    • http://wavikedinufefe.iblogger.org/83776271343.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pikarofuwab.epizy.com/safaxajo.pdfIn PDF document text
    • http://rorujuzolu.epizy.com/hd_movies_apk._in.pdfIn PDF document text
    • http://gatokelemek.rf.gd/acknowledgement_for_project_report_in_computer_engineering.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF4 5172 bytes
SHA-256: 220c6485079e4523de8f2b1f2f4339b5137c5aa87940f63c7ff4c7861cc5c85e
font_01_sfnt_off0000e183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE183 10724 bytes
SHA-256: 6c83634b0dc00ab304df133691beb61e91b7ce6227dcd64d4517ef93494e438f
font_02_sfnt_off00010629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10629 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71