Malicious PDF — malware analysis report

Static analysis result for SHA-256 3319fc79a77b5bf2…

MALICIOUS

PDF

73.9 KB Created: 2021-04-08 06:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 818b4ffcfb80e338fd5c00a9b928a5ac SHA-1: b716f6b595dc1780a281c652ea26301cfe5464ed SHA-256: 3319fc79a77b5bf29471709e8d08e5ce47b75562efd8b6cf82fc9559b0ee2816
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The PDF structure and embedded URLs suggest an attempt to trick users into visiting a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • 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://jumiwimov.ru/wix?keyword=happy+birthday+hair+stylist+cake
    • http://sethel.xyz/busirumamoa9pyy.pdf
    • http://affilateapp.online/dibujogetuparafeocz1g.pdf
    • http://reznitskygallery.com/14789078725tf632.pdf
    • http://setafugeridol.scienceontheweb.net/badger_in._english_for_work._everyday_business_english.pdf
    • http://hayatevesigar.online/28228435679w6dvy.pdf
    • http://organic100.fun/xamilerolabutivuwosubowy76r.pdf
    • http://butalinonoruma.scienceontheweb.net/nidibonavugadipu.pdf
    • https://cdn.sqhk.co/gonolesuzam/i8Lgdo8/sijovozo.pdf
    • http://lorewipa.scienceontheweb.net/dadaxilopovoxukopajepasi.pdf
    • http://peuly.xyz/lasugaposopefiabr35.pdf
    • http://discount50it.pro/sawevedomosizutivefawi0h2kg.pdf
    • http://arnautmebel.ru/lowizvcaek.pdf
    • https://cdn.sqhk.co/vejuwipem/ghiijKV/34120361196.pdf
    • https://cdn.sqhk.co/nuvexajamu/igHHRgd/66364816419.pdf
    • https://cdn.sqhk.co/kigimole/igM1rLG/love_failure_tiktok_videos_telugu_download.pdf
    • https://cdn.sqhk.co/bidogefapo/ic1Tihq/42002912333.pdf
    • http://qwertyujg.xyz/69437862094mnhlo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://645c32c3-7e99-4959-b93b-7980205539d7.filesusr.com/ugd/30a31c_ab35439d066347f9be911b0d46f4ebe9.pdf?index=true
    • https://s3.amazonaws.com/gowebabuxogiro/dsc_power_832_user_guide.pdf
    • https://s3.amazonaws.com/bodajaku/baptism_of_fire_meaning_in_bengali.pdf
    • https://s3.amazonaws.com/desekusoxi/dadijavamojuxaxewu.pdf
    • https://810dce77-56ab-4324-823a-3549757f4eab.filesusr.com/ugd/1fad07_d468e67d6fe148e4a8cc928f1312a094.pdf?index=true
    • https://0feddc0e-03bc-46a3-a741-45303deff239.filesusr.com/ugd/6ea6a2_3e5c0bdcea514b6abb266a0092e4e9b3.pdf?index=true
    • https://73af689e-4c80-4f62-99d3-7a886641ad81.filesusr.com/ugd/3b5dd9_b3d3172ba6344a6e8335b22bccdb07ea.pdf?index=true
    • http://xefiposokupama.myartsonline.com/96218395893.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da38.bin
1c0cb0cff43c93555cb60bbc6b0acf17c694454b1cfd280773a33f290d6a9733		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA38 5428 bytes
font_01_sfnt_off0000ec9c.bin
d966006e4820d682426acdf05586c8d4faea6552db8eaeb89a5617a05a9684d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9C 2152 bytes
font_02_sfnt_off0000f5f5.bin
befd78d45e705cf93773a8dc60b4fb9e9aa6c9623649d5f3bf61f61abfbcd5a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F5 10472 bytes

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