Malicious PDF — malware analysis report

Static analysis result for SHA-256 715c60d5560cc938…

MALICIOUS

PDF

79.0 KB Created: 2021-01-12 09:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 56742e4950f332c187dc3261d8a4a516 SHA-1: d2007c34beef8b16f2583ad70eb30da0ac617ee6 SHA-256: 715c60d5560cc938a7f28bf8d256958697c4681d14ea8b7e49fca51b7ccc87f7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains multiple embedded URLs, including one pointing to 'trafficel.ru' with a query parameter suggesting a lure for a 'tactical droid 3d model'. Another URL points to a file named 'hollywood_studios_the_movie_tycoon_game.pdf', indicating a potential game-related lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests a malicious intent involving multiple disposable domains for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/123?utm_term=tactical+droid+3d+model PDF link annotation
    • https://cdn.sqhk.co/befozaxulot/ifjhTdN/hollywood_studios_the_movie_tycoon_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450512/normal_5fd39509e9557.pdfIn PDF document text
    • https://site-1175508.mozfiles.com/files/1175508/68197704118.pdfIn PDF document text
    • https://site-1083679.mozfiles.com/files/1083679/zerolu.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/fifyaig/heart_s_medicine_hospital_heat_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426059/normal_5fd11753624aa.pdfIn PDF document text
    • https://lurusavi.weebly.com/uploads/1/3/2/7/132710630/xasawebadoxad-sosexufaxeji.pdfIn PDF document text
    • https://gekonoxare.weebly.com/uploads/1/3/4/4/134480638/6928696.pdfIn PDF document text
    • https://nuvetifozeg.weebly.com/uploads/1/3/4/3/134358797/e5aa3ab3ce.pdfIn PDF document text
    • https://site-1176846.mozfiles.com/files/1176846/baby_panda_hospital_game_download.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/mokamoba/bsc_agriculture_form_date_2019_hau_hisar.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/dewutasamamuxewejopimu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD419 3244 bytes
SHA-256: 62a8feaef1631771c5ee8dcf8a8c20ab9bb0a86be6000684ddd9e51aed4a4538
font_01_sfnt_off0000dfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD5 5020 bytes
SHA-256: ca3bee772c2ffe413632e17a9ab5a04d5047c719112ab8c04f4be6167342be96
font_02_sfnt_off0000f0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D0 12444 bytes
SHA-256: 83ca68bc211e1b6f10a3fdd4b0036bec638821ffc2f928588f36f7f66f4df5ec
font_03_sfnt_off0001181a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181A 16064 bytes
SHA-256: 89ea268ffa59a485562bcbc733dc9db7a74b633fdc7a84b244b2905325b525a5

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