Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc429192976602c…

MALICIOUS

PDF

72.6 KB Created: 2021-02-16 20:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1d8c76f3aae706ce96c7e22b5baf62db SHA-1: 573fd390f7a5eb0165156cb1ac735d9e51274b92 SHA-256: ccc429192976602cba5b9cf7e977e171de262d2566ac8741d10172aa050ae7a2
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://jottigo.ru/wix?keyword=san+gabriel+elementary PDF link annotation
    • http://tehnopolis.org/pdf_split_tool_freeas9rn.pdfIn PDF document text
    • https://wegakerovosa.weebly.com/uploads/1/3/0/8/130873826/8204477.pdfIn PDF document text
    • http://info-pages.ru/154637758426ibe2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485176/normal_5fcd9aa03b19c.pdfIn PDF document text
    • https://menuwenuxunok.weebly.com/uploads/1/3/4/6/134682317/bufusolazedikajomode.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/1994498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_6012fc29ce1fb.pdfIn PDF document text
    • https://xewulowew.weebly.com/uploads/1/3/4/7/134757629/345597.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421957/normal_5ffda08ea0478.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ripeterub.epizy.com/ordering_decimals_worksheet_year_4.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/1141587174.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/cover_letter_block_format_spacing.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/rising_storm_2_vietnam_pc_free.pdfIn PDF document text
    • http://kutepiguzusudax.epizy.com/wetojelagawudakazimetoxos.pdfIn PDF document text
    • http://xevorerokune.epizy.com/26003699191.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_off0000ddc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC4 5172 bytes
SHA-256: 849e671e964cfe3eecb2dec9ffffb82621d9fe1a5d465031909660b519c11726
font_01_sfnt_off0000ef51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF51 11128 bytes
SHA-256: 93c5ceb1050a9379ecd9366c7a90c9415f872b45bdc89696944a14e502742061