Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e46483515c98786…

MALICIOUS

PDF

76.6 KB Created: 2021-03-17 09:08:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 72e450859547ecbfd00af1796197202f SHA-1: be07a741fe719c0d5c06d578ed28349d3a0b8170 SHA-256: 2e46483515c98786059d2a6abded7e6e86aa29cfcad6399f36357e6428349bb0
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL that redirects to a suspicious domain, likely serving as a lure for users seeking technical assistance. The presence of multiple external URIs and a link farm heuristic further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/strik?utm_term=how+to+connect+myq+liftmaster+to+wifi PDF link annotation
    • https://kapiluruge.weebly.com/uploads/1/3/4/6/134672566/242244697.pdfIn PDF document text
    • http://vasetar.iblogger.org/red_rising_game.pdfIn PDF document text
    • http://gamokidawenikon.iblogger.org/how_to_open_lg_remote_control.pdfIn PDF document text
    • https://bojomuse.weebly.com/uploads/1/3/4/4/134462584/fb007.pdfIn PDF document text
    • http://mopomelodow.iblogger.org/ableton_live_10_demo.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/3dc509cf80b72aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://murawarex.rf.gd/wivedutijuruboximaxepi.pdfIn PDF document text
    • http://rupeguv.epizy.com/70923770834.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/gudafugokisuvewufowapi.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/lamokudofi.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/pokemon_revolution_online_saffron_gym_guide.pdfIn PDF document text
    • http://serotedirip.epizy.com/16165719163.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/cuantas_calorias_tiene_una_cucharada_de_miel_de_maple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c44cb615-192b-459a-9faf-447698479cc1/31778513810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5114562-c2ff-4b65-b8d6-d3781f9b9834/here_i_am_lord_lyrics_dan_schutte.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/beats_audio_driver_windows_10_hp_envy.pdfIn PDF document text
    • http://zepurudevivo.rf.gd/macbeth_study_guide_act_1_scene_1_answers.pdfIn PDF document text
    • http://dijorud.epizy.com/85866558162.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD836 5308 bytes
SHA-256: 30c013ba384d1c29484ae8c5d9c12a3eaab1c94f9a73f07082320986fc8704a9
font_01_sfnt_off0000ea4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4A 10932 bytes
SHA-256: e2f2478cada37e151dcda2373e1fb8e3f3dc26714ac865e539a30addf5c3f56b
font_02_sfnt_off00010feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEB 16084 bytes
SHA-256: a3b8ae6cb61a975f1aaa3bdf1d75290c2750726bc6c8d8b6ec62e4e9f5cc9978

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