Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c4cb96d3d0faf9…

MALICIOUS

PDF

81.2 KB Created: 2021-03-22 06:57:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e9ba0f942ea7ee67f2222623eda0278 SHA-1: 2c639502f21eaa3c0b09db701cb7ecc4d7fe811c SHA-256: 64c4cb96d3d0faf9820207248325c1c67ce0e623e24e06117d2797efde4be371
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and a high ML score. The PDF contains a large number of external links, with one primary URL pointing to 'https://xezojetit.ru/123?utm_term=chronicle+of+darkness+character+sheet'. This suggests the document is designed to redirect users to malicious websites, likely for phishing or to download further malicious content. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/123?utm_term=chronicle+of+darkness+character+sheet
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/975fcb2f2.pdf
    • https://xinofebew.weebly.com/uploads/1/3/5/3/135305957/7600747.pdf
    • https://tekudijasefemo.weebly.com/uploads/1/3/2/7/132740256/530f99d61.pdf
    • https://fusasevamasaxig.weebly.com/uploads/1/3/4/8/134866100/wowaxat-volamopotopej.pdf
    • https://nezasitize.weebly.com/uploads/1/3/5/3/135303973/vunosifurajunuduroz.pdf
    • https://static.s123-cdn-static.com/uploads/4477167/normal_5ff5697f3dddc.pdf
    • https://bivovipolever.weebly.com/uploads/1/3/4/3/134347360/b075b3fbf7d513f.pdf
    • https://kusezobovezuzeg.weebly.com/uploads/1/3/4/6/134689385/fb6b4c9659.pdf
    • https://static.s123-cdn-static.com/uploads/4380237/normal_5fd052d9bcce4.pdf
    • https://torudedo.weebly.com/uploads/1/3/4/3/134352944/8316879.pdf
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/famekonusi_zabatuxiwed_salexekolamolo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wewiro/self-_certification_form_crs_e.pdf
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_8c9eaae3322f42889cebdda673dad230.pdf?index=true
    • https://s3.amazonaws.com/wexoteluwag/brakebest_brake_caliper_guide_pin_kit.pdf
    • https://uploads.strikinglycdn.com/files/80ba472a-3939-4af5-8699-a94cc4dd2f15/xigijigejolojinolifab.pdf
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_7d41a3ae37174ee6b6f560e80d59667c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/63d67b0c-6f59-497e-ae93-cd809d070b53/nemotekigofina.pdf
    • https://s3.amazonaws.com/gudukupir/59089345655.pdf
    • https://uploads.strikinglycdn.com/files/22e82fe1-ac95-43d2-b893-c146f6769b94/vinafejupelefixovozabo.pdf
    • https://s3.amazonaws.com/remeranexe/my_talking_angela_hack_version_apk.pdf
    • https://uploads.strikinglycdn.com/files/e6d7deeb-8bda-4cf0-a00c-a26d2be1b07e/xutolom.pdf
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_b18ede8a5d37467aa1451a556c233a35.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8920fb09-c238-4b7c-8766-c59bdb8d0071/bagofojilobajadejoju.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe2c.bin
32eca2eb05c2e5ed4e7c9d9c461a4b4a932840b28b36a0489619e9f1f4feab56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2C 5080 bytes
font_01_sfnt_off00010f6d.bin
c0cc8cc5ce3e1c33957c6ad8b434bb9c6ebc5b7a821378f3914f5568a66b27c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6D 11204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.