Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7aea3cb29d4147…

MALICIOUS

PDF

80.9 KB Created: 2021-03-31 04:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cee0df42f839800a40dca3fd2506036c SHA-1: 78d9817bc67defa9e7e075b4dc78a4494af678a1 SHA-256: 5d7aea3cb29d4147c9c549831c4eee4c0cb2b2ac58efd9c9a08d2921083bedbd
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, one of which is `https://bologen.ru/wix?keyword=popsicle+sticks+tower`, suggesting a phishing or malware distribution attempt. The PDF structure itself appears to be a lure, as indicated by the `PDF_URI` and `EMBEDDED_URL` heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://bologen.ru/wix?keyword=popsicle+sticks+tower
    • http://lizowaw.scienceontheweb.net/tucker_high_school_engineering.pdf
    • https://cdn.sqhk.co/nobipajami/CjcAjgp/legajupuvoxog.pdf
    • https://cdn.sqhk.co/gelowidabik/iQuiigc/majesty_northern_kingdom_apk_mod.pdf
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5fe7e35da197c.pdf
    • https://cdn.sqhk.co/vuvupewog/gqvijrS/95426685469.pdf
    • https://cdn-cms.f-static.net/uploads/4456134/normal_6030e71295291.pdf
    • https://cdn.sqhk.co/vegupujed/HkhgeKm/lol_miss_fortune_guide_german.pdf
    • https://cdn.sqhk.co/jelivapizivo/geicVge/wolf_online_game_pc.pdf
    • http://belofakomag.mywebcommunity.org/75861353502.pdf
    • http://xatovapotogu.mywebcommunity.org/amazon_web_services_in_action_second_edition_download.pdf
    • https://cdn-cms.f-static.net/uploads/4381083/normal_601d675c7b624.pdf
    • https://cdn.sqhk.co/rularijulen/Yixm8e0/vutubukelipewoxivipivixi.pdf
    • https://cdn.sqhk.co/wofunukasu/gdhiUQD/world_market_locations_near_memphis_tn.pdf
    • http://sakulog.sportsontheweb.net/617148930.pdf
    • https://cdn-cms.f-static.net/uploads/4384828/normal_604a8b2233574.pdf
    • http://wivikaxebox.medianewsonline.com/biografia_augusto_cury.pdf
    • http://gipogup.sportsontheweb.net/75187534324.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/446d735e-2673-4e85-aee3-394509511bec/porter_cable_scroll_saw_replacement_parts.pdf
    • http://zejusamipokera.myartsonline.com/voxedimazozuxufiver.pdf
    • https://uploads.strikinglycdn.com/files/cf02e979-218c-4089-8fb5-811d713b9fb6/1978_dodge_sportsman_rv_owners_manual.pdf
    • http://todifisafi.atwebpages.com/attestation_de_stage_tunisie.pdf
    • http://pikubub.onlinewebshop.net/kogosanaxog.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_off0000ff80.bin
39b723b386278eeb44b8dae4b1b8910a8db87a3772cc52f7c7cbe9b0c653e106
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF80 4872 bytes
font_01_sfnt_off00011039.bin
3c7670189672d8a2e9c52b9b2ceeb7ea7e1ba6726f0d29a835d82c55a8294479
pdf-font-stream PDF embedded font (sfnt) at offset 0x11039 11200 bytes