Malicious PDF — malware analysis report

Static analysis result for SHA-256 a37b5b3d7de966c7…

MALICIOUS

PDF

66.4 KB Created: 2021-03-18 09:00:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a0695ad241b327a0c01a52298512af84 SHA-1: 560b4a690c3aace539b534126343e3805d451bc0 SHA-256: a37b5b3d7de966c7416dc8b7218dae28eaa223851e1adb8fe0bfd797c136274c
126 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. The PDF contains numerous embedded URLs, with one pointing to a suspicious domain ('resalured.ru') that is likely used to host a malicious payload or redirect to a phishing site. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is part of a network of disposable links designed to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/aws?utm_term=manual+micro+motion+portuguese+2700+profibus PDF link annotation
    • https://cdn.sqhk.co/vakenuda/gitbMib/pear_launcher_apk_pro.pdfIn PDF document text
    • http://ruvinowuge.scienceontheweb.net/23061529280.pdfIn PDF document text
    • https://koruguliduni.weebly.com/uploads/1/3/4/8/134896859/404f40f11aa5a2.pdfIn PDF document text
    • https://narivuwejuw.weebly.com/uploads/1/3/5/3/135310919/vovabi.pdfIn PDF document text
    • https://faranopiz.weebly.com/uploads/1/3/5/3/135332407/1895960.pdfIn PDF document text
    • https://jewakazakiven.weebly.com/uploads/1/3/1/4/131437085/893186.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/xupodoxejufulepoli.pdfIn PDF document text
    • http://vuwefedope.sportsontheweb.net/what_are_the_elements_of_a_musical.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/Ubicrhe/damerijisupiku.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/ggdjfji/4964674085.pdfIn PDF document text
    • https://pesosetolumejaw.weebly.com/uploads/1/3/6/0/136094132/jopusubakuzowak-satage-pisebire-wofetura.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mojigoka.atwebpages.com/sunoredusidejar.pdfIn PDF document text
    • http://tipokeviti.atwebpages.com/yamaha_40_hp_outboard_rebuild_kit.pdfIn PDF document text
    • http://fereralud.epizy.com/14456580934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec61a704-962b-4135-8a7b-270b88f10cd3/which_came_first_bible_or_gilgamesh.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/swann_8_camera_wireless_system.pdfIn PDF document text
    • http://ligixuz.rf.gd/crude_oil_inventory_api_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d62914a-d352-4371-b0f4-d90cb69bfb63/metro_2033_book_english_online.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/vlookup_guide_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/zipibozadujabumedajojofi.pdfIn PDF document text
    • http://musizaxodolof.epizy.com/44522047161.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/zilezudibivajipe.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_off0000c921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC921 5832 bytes
SHA-256: 5e274714a47b8b163255d0e894e7062f3b0190ca41dcdcb26afc59b66daf986a
font_01_sfnt_off0000dcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFA 9272 bytes
SHA-256: 68ec2e28851dbaf3f34300871a5175cc8dbe9a88744cbbae75655da7ea163e8e

Open this report in the interactive analyzer, or submit your own file for analysis.