Malicious PDF — malware analysis report

Static analysis result for SHA-256 02188e5f1e0f4d9c…

MALICIOUS

PDF

74.8 KB Created: 2021-03-18 13:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ca63faace5fac4bc5ab22017b2117506 SHA-1: 9c62705024cf6dcc50edb0d05eed2ded7191ea51 SHA-256: 02188e5f1e0f4d9cab5fa785a5526b687fa1908edbf4ca660461115bba159949
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'midufefew.ru'. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to a 'trophy list'. The presence of multiple disposable hosting links further supports a malicious intent for phishing or malware distribution.

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://midufefew.ru/wix?keyword=atelier+lulua+trophy+list PDF link annotation
    • http://saxefitipar.iblogger.org/atomic_structure_and_isotopes_quiz_answers.pdfIn PDF document text
    • http://zelafagilu.iblogger.org/roxonad.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/9jjjgF7/app_store_apple.pdfIn PDF document text
    • https://cdn.sqhk.co/sowanigog/egiNhiM/warazipaxutakatuf.pdfIn PDF document text
    • https://cdn.sqhk.co/tanusulirava/fihYhj9/cluedo_board_game_original.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/uaheibO/22302114982.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wereguvepowu.epizy.com/rupuf.pdfIn PDF document text
    • http://rigatage.epizy.com/shed_plans_12x12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96b2c47-89f7-4079-8d98-81a7cdd47c32/chet_holmes_ultimate_sales_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992d1a49-86df-492b-b60d-b87aecc9a15b/kesaxepaxerazufaxanodit.pdfIn PDF document text
    • http://norisufa.epizy.com/torowubezoxilonupi.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/autumn_leaves_powerpoint_template_free.pdfIn PDF document text
    • http://valogaberel.rf.gd/albert_ellis_how_to_stubbornly_refuse_to_be_miserable_about_anything.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7a2d04d-388a-41b2-82f2-ccf6f599a55c/tokyo_ghoul_re_anime_season_3.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/building_muscle_101.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/bluetooth_adapter_free.pdfIn PDF document text
    • http://bidovug.rf.gd/gupazovupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6511e702-fcfb-4092-8d2c-df1701eac15c/63991453982.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3bdeb9-8612-4d5e-96c0-1fc094d1a517/tedapopenejogel.pdfIn PDF document text
    • http://xagejinije.rf.gd/digital_library_software.pdfIn PDF document text
    • http://fexulumusevemi.rf.gd/mokadikitukapalije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a516583e-b4df-439e-ba1a-2b5f3e6720c5/thank_god_for_new_job_quotes.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_off0000e69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69F 4996 bytes
SHA-256: 9634bab8bbc5ecdb499b91de2c854f2ca0c66939e8154052d29f47c8323a4ca7
font_01_sfnt_off0000f79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79E 11348 bytes
SHA-256: 0cb82d6bbdcc4a9ed6591331c7dbe523a9701d6c682b74667ebb2085c11e6488

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