Malicious PDF — malware analysis report

Static analysis result for SHA-256 311cc975e2977466…

MALICIOUS

PDF

74.4 KB Created: 2021-04-15 17:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af6886a997ce4237cfaf9d8659a3226c SHA-1: 6913217438638f34ff5dabbe9beb270874bbcf87 SHA-256: 311cc975e297746616e01e7a42ea145c5ac6d2fdd72d50bb8bd37db2fccaf198
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'resalured.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'Pegasus bamboo faucet repair', indicating a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/strik?utm_term=pegasus+bamboo+faucet+repair
    • https://cdn-cms.f-static.net/uploads/4381544/normal_603c5da026720.pdf
    • https://zavifojixu.weebly.com/uploads/1/3/3/9/133997579/15240a90a71b3.pdf
    • https://cdn-cms.f-static.net/uploads/4380858/normal_604a4be72cc0f.pdf
    • https://cdn.sqhk.co/gejupajo/UfjOjdY/space_launcher_apk.pdf
    • http://replyua.site/character_development_sheet3qc2a.pdf
    • https://static.s123-cdn-static.com/uploads/4413231/normal_5feb8fc717abf.pdf
    • https://cdn-cms.f-static.net/uploads/4468827/normal_6024a9a4ef5fc.pdf
    • http://fotonagosuslugi-01.space/288082778809t26o.pdf
    • http://appletopshop.ru/free_movie_songs_downloadyx0l8.pdf
    • https://cdn.sqhk.co/jategumeb/1KhjwwG/78954268462.pdf
    • http://helpcreditscore.info/what_is_bmw_homelinkz082a.pdf
    • https://cdn.sqhk.co/fekigimuzib/gijgchb/walking_dead_final_episode_trailer.pdf
    • http://bodyita.space/11775704221gnpuy.pdf
    • http://tafugegajotu.mygamesonline.org/5188042702.pdf
    • https://static.s123-cdn-static.com/uploads/4459029/normal_5ffd9fe5c08c8.pdf
    • http://neo-tp.ru/insanity_max_30_workout_calendarz429j.pdf
    • https://xolivura.weebly.com/uploads/1/3/5/9/135958321/daf50a2d.pdf
    • http://nicechange.space/xojusopatevafevopijowoyl0i.pdf
    • https://kodetowunim.weebly.com/uploads/1/3/4/7/134701578/a2d967c9f.pdf
    • https://cdn.sqhk.co/sifajoxojif/pigpugh/water_parks_near_me_that_s_open_today.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mubodadekutaxim.atwebpages.com/vlookup_all_formula.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_off0000e4c2.bin
6eac1b26b7a00fdb77013f6411ca60593f13df17d0b903d125f3bddc5f3fa269
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 5444 bytes
font_01_sfnt_off0000f736.bin
090aee8f42a455f32f02d5bfc749febd0c8582e4b90db67452d2fa6517d6760e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF736 10932 bytes