Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aa1251f619d6f8f…

MALICIOUS

PDF

64.9 KB Created: 2021-02-20 01:10:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fa6197e7367c4d1d03de00c0de732fd8 SHA-1: e45183cf0032eac62db4665400457d72e37ba6b2 SHA-256: 8aa1251f619d6f8f08dc156903582a12eb9f4bcae64360ab3325010b2aa0be2c
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://maypoin.ru/wix?keyword=coulomb%2527s+law+simulation+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408485/normal_60183741ebc49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464527/normal_60034ab10fbb2.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxudofexal/geFjagc/buwozafasamukilovon.pdfIn PDF document text
    • http://esmoney.site/nafebol74o8.pdfIn PDF document text
    • http://alluniversity.fun/mini_world_block_art_apk_obbzpxad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_6029606c3ea42.pdfIn PDF document text
    • https://cdn.sqhk.co/ledoridizeme/ONjgqgj/69067529264.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/CjgiaTp/pibukadunebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_5fff990d17d91.pdfIn PDF document text
    • http://wiinorama.fun/icd_10_paronychiaow5ui.pdfIn PDF document text
    • http://innov-cis.net/turoze3s08.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/zodererezuzuxi/wegen.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/chicken_tikka_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/apex_launcher_pro_apk_uptodown.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_off0000c2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D0 5160 bytes
SHA-256: 14a5562ceace2b0dbace5e3413679c441a052581eb7a6135aedeb5897b5c9563
font_01_sfnt_off0000d440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD440 9936 bytes
SHA-256: d811c1eba6daa2bc38357f02e192a3464dfba8ce2bc88b41dc937f9f1b7be907