Malicious PDF — malware analysis report

Static analysis result for SHA-256 756cacfad9c8d19a…

MALICIOUS

PDF

72.7 KB Created: 2021-02-13 22:04:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 746f97ba196c1594653045df29f2f3e6 SHA-1: 24ec4f947b161f801ad62cd7bd9ca41c190773ab SHA-256: 756cacfad9c8d19a7e72f200722155532bfe3c33f102c95c026d4ccb1a87517e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=astound+channel+guide PDF link annotation
    • https://lepudumewo.weebly.com/uploads/1/3/5/9/135962044/wubal_merexomux.pdfIn PDF document text
    • http://vknart.xyz/92204233927erkj4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446914/normal_5feeb5b4a70a1.pdfIn PDF document text
    • https://cdn.sqhk.co/nagebagem/3hcie0g/nail_foot_doctor_knee_replacement_surgery.pdfIn PDF document text
    • http://haifaiv.ru/bluestacks_app_player_android_versionsbham.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445866/normal_5ff934cf871c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493209/normal_6012f3a6901fc.pdfIn PDF document text
    • http://sovetnik53.ru/ririkipisijefoyu85o.pdfIn PDF document text
    • https://cdn.sqhk.co/zufosupiz/njdSbSr/video_editor_for_chromebook_no_watermark.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370764/normal_5fccec4e3b571.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/kerol.pdfIn PDF document text
    • https://kulegireketo.weebly.com/uploads/1/3/5/3/135325025/kewuliboridutu-dazuniwotajola-jalivi-porivipomeve.pdfIn PDF document text
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/5277520.pdfIn PDF document text
    • http://mishgen.com/91303521807sndrh.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/vinivuxo/gta_vice_city_apk_aptoide.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/worinosel.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/79399858618.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_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 5092 bytes
SHA-256: 11ceafb49afdcf2a554bf77b61cb8d597f416e53d167656bf71177e9ee2f9d00
font_01_sfnt_off0000f330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF330 10256 bytes
SHA-256: 085901659625bd9ad45ecf9c1e97acdf5ee7e0bb9a1b631a78b17b211285ba83