Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d9f64ee362ce9c3…

MALICIOUS

PDF

70.4 KB Created: 2021-02-22 23:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a989db8ba333426f71602d7a5067c9d3 SHA-1: 5d77e987e599a3dbbe1d9250dae89a6c22049c62 SHA-256: 7d9f64ee362ce9c306a97a4812943ee41683a9b3c231273709a80b3d61b3c8c1
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=laticrete+floor+warming+thermostat+instructions In PDF document text
    • https://cdn.sqhk.co/mopomotop/Qgchexk/78864723589.pdfIn PDF document text
    • https://gixinizolovuz.weebly.com/uploads/1/3/5/3/135348456/jafus-gimuwuxofij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_60220f7080ad2.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/hAhhgIT/17256171093.pdfIn PDF document text
    • https://somirurawepaf.weebly.com/uploads/1/3/1/3/131381963/7073934.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425227/normal_5fcb5750c4145.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414515/normal_600b5d21272b4.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/ObGicxv/dedusutokamifutes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384154/normal_6013a9bf429cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484633/normal_60317de273e1a.pdfIn PDF document text
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/2091872.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/6YFKOd2/digital_wellbeing_app_not_working.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_5fd8ec060dbd8.pdfIn PDF document text
    • https://kifajiziwezu.weebly.com/uploads/1/3/2/7/132740821/057fb4d7fbbf.pdfIn PDF document text
    • https://lefipotadap.weebly.com/uploads/1/3/5/9/135959992/nulimulor_xasagojom_zutugef_vubupe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384149/normal_5fe389fda6a1c.pdfIn PDF document text
    • https://cdn.sqhk.co/puroneruk/iegfjh8/real_air_jordan_1_price.pdfIn PDF document text
    • https://gisidamuxifa.weebly.com/uploads/1/3/0/7/130775495/gafiv.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://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_off0000c87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC87E 5208 bytes
SHA-256: cc2fdbe38f99a001e4e803f892042ca7176eed510c28cffe0455ad9402be59d1
font_01_sfnt_off0000da1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1C 10448 bytes
SHA-256: 443e080ede45877cc475bd8fc22c8920e543f2ac62e35e6132e80ce5c5822b88
font_02_sfnt_off0000fdd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD8 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3