Malicious PDF — malware analysis report

Static analysis result for SHA-256 73081992b5592459…

MALICIOUS

PDF

72.3 KB Created: 2021-02-20 00:22:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4428423f2e4a9625e13fa943db23a38b SHA-1: 3e86ae15b93822bcb332cddaecf21dbf833d925d SHA-256: 73081992b5592459ca2c4248aa6082e475cda328f67220979c15a243a535d73a
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=web+3.0+tools+and+applications PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369762/normal_5fe7ef200e42c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500897/normal_5ff5ecd1ab4d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_600d6e9bef6c3.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/W5FdvBM/fifa_world_cup_qatar_2022_groups.pdfIn PDF document text
    • https://cdn.sqhk.co/madumubo/swgfjdw/3170496032.pdfIn PDF document text
    • https://lekaretuzej.weebly.com/uploads/1/3/0/7/130738752/9892361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450502/normal_5fd9694b1da64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_601aba51131ac.pdfIn PDF document text
    • https://cdn.sqhk.co/zupololano/EjivDlV/smart_card_manager_windows_10_download.pdfIn PDF document text
    • https://lisumefi.weebly.com/uploads/1/3/1/4/131408082/1856303.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490539/normal_5ff3f1fd8cb68.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/l7NqjfV/arena_football_league_championship_rings.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/wajufifenoxuj/nixuzimijizuvomizopefafal.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/gewatebaw.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/acoustic_research_s108ps_subwoofer_manual.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_off0000de2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2D 5464 bytes
SHA-256: 5f179309b32bbbeb9edb386c6f40f6ab938ec795249f72aef705da4040f573b8
font_01_sfnt_off0000f0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E0 10476 bytes
SHA-256: 036a1c966e543dff6fb28989760214b9a5f3e282c62b66ec3f8b578b8779d7df