Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd63d0f0e9117fa…

MALICIOUS

PDF

72.0 KB Created: 2021-03-03 10:10:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b9741b6ed5e24c3ba6e8eb3fd94218a3 SHA-1: 1a03c3d8b746a543cc866cd5bbb3af004bd51794 SHA-256: cdd63d0f0e9117fab82a8d5230027efb4e8488c993e25e768589ef819b336ca1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=how+to+find+interior+angles+of+parallelogram PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454438/normal_601405a1e8d40.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/76410566715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419644/normal_602abd219312e.pdfIn PDF document text
    • http://kubosikavudux.mygamesonline.org/what_are_all_12_greek_gods.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/zakuxujixekilarumufefat.pdfIn PDF document text
    • https://jetujonupukoj.weebly.com/uploads/1/3/1/1/131163664/3d253df34c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409236/normal_5fe4bb4ec48df.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/med_el_sonnet_2_eas.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/que_es_liderazgo_transaccional.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496602/normal_6012b6f12928a.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/hi6Iajd/8239098873.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC68E 5416 bytes
SHA-256: ea395b66d1f89a769ab67fa0ae2f620ba92eac0cd5dd8018e51d7f15e7b680f4
font_01_sfnt_off0000d8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F9 10812 bytes
SHA-256: b04a46177fee5deb0e97bbd2c7c7dbf3d467fd165ce8c6abc081f39e952a420b
font_02_sfnt_off0000fe40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE40 16072 bytes
SHA-256: 4ce97752c8d1ed0b0302a1507788019c6b738cc3ee96ca273f61f92c287db7cd

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