Malicious PDF — malware analysis report

Static analysis result for SHA-256 342811976c01898d…

MALICIOUS

PDF

80.2 KB Created: 2021-03-12 11:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb77f9cce8ac710582b21ec4737a3615 SHA-1: bea1eb5e0cad9240bf75aeb790dd894b3639b5a4 SHA-256: 342811976c01898d75ffe2ec41c1e8a5881d51cf1b87bd24cd86435ab9c674d0
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to a strategy guide, which is a common tactic for phishing or malware delivery. The presence of external URIs and the overall structure indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/strik?utm_term=earthbound+snes+strategy+guide
    • https://cdn.sqhk.co/nobixapo/ldmhiaR/homemade_milk_chocolate_frosting_recipe.pdf
    • http://fofiwafajelerax.sportsontheweb.net/what_was_life_like_before_world_war_1.pdf
    • https://kamapapidez.weebly.com/uploads/1/3/5/9/135962567/6952185.pdf
    • https://rubuvewoxuvima.weebly.com/uploads/1/3/4/8/134873715/pedojiwu_fopef.pdf
    • http://kobodesuwid.getenjoyment.net/texas_instruments_ti-84_plus_online_use.pdf
    • http://vafumukiwafi.iblogger.org/fusionner_fichier_acrobat.pdf
    • https://cdn.sqhk.co/konumapedowe/KMhi2ha/11999871207.pdf
    • http://nibewubixela.getenjoyment.net/firestars_quest_midnight.pdf
    • https://nakidero.weebly.com/uploads/1/3/4/5/134524904/fupeti_mikemivefosan.pdf
    • https://woteginawewe.weebly.com/uploads/1/3/1/3/131379999/tilubiruludilate.pdf
    • https://cdn.sqhk.co/sipebililofo/jhl6hg9/health_information_science_and_systems_journal_impact_factor.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xapota/ham_radio_license_test_book.pdf
    • http://rexerutagid.epizy.com/79982472392.pdf
    • http://nenilezum.epizy.com/how_to_see_comments_in_google_docs.pdf
    • https://s3.amazonaws.com/vojapu/beats_wireless_charge_time.pdf
    • http://vufilupirudote.rf.gd/lufis.pdf
    • http://katuribadelu.rf.gd/jodojulaletatenu.pdf
    • https://s3.amazonaws.com/winumigutam/50276424586.pdf
    • http://dozuxix.myartsonline.com/wolf_range_parts_list.pdf
    • http://jibimom.myartsonline.com/surgical_asepsis.pdf
    • http://sepazebop.rf.gd/yamaha_djx_manual.pdf
    • http://mezezix.rf.gd/litanei_des_blutes_guide.pdf
    • http://goseletew.epizy.com/56261429897.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6d4.bin
d4d819821c2de5a893148070431215acb7dcbc61115770b4243db20f6fe53c6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D4 5256 bytes
font_01_sfnt_off0000f8b3.bin
351d46fcd9dc5271d8dff3856e40bcd9f1608b94ad9a4e747eaa6bbc66138fc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B3 10680 bytes
font_02_sfnt_off00011da8.bin
ff91d1ea073407c8b0ef0d31a19d7774978be3835583a6a5c05dec98edf7f0ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA8 16100 bytes

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