Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb0acca17211ab3…

MALICIOUS

PDF

82.7 KB Created: 2021-06-07 20:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cda769aef9f23fcedaaf7e3036c5f259 SHA-1: c256d80a98e9ad14d3f2964e7dc2fe12fd1cc12f SHA-256: 5fb0acca17211ab3234c2a1e9866ce4e690333b2dceb757d525667fc9e55d7f5
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous external links, with a primary suspicious URL pointing to 'lozipotod.ru', suggesting it's designed to redirect users to malicious content or phishing sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high volume of links on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lozipotod.ru/123?utm_term=cover+letter+template+au
    • https://cdn-cms.f-static.net/uploads/4401697/normal_6051dd07b2b34.pdf
    • https://farunigi.weebly.com/uploads/1/3/4/7/134716297/a3dddb23b26689d.pdf
    • https://cdn-cms.f-static.net/uploads/4419415/normal_6024f16fc75c5.pdf
    • https://piwitaxoz.weebly.com/uploads/1/3/4/6/134603619/tofixagigatoku-jifetoza-kowarezu.pdf
    • https://matamelo.weebly.com/uploads/1/3/1/3/131384575/pavibo.pdf
    • https://bokesaxigalul.weebly.com/uploads/1/3/0/7/130776824/96368e.pdf
    • https://zovipimisog.weebly.com/uploads/1/3/1/1/131163747/01129fd7f2.pdf
    • https://static.s123-cdn-static.com/uploads/4460461/normal_5fc7e6da8b627.pdf
    • https://gupiwisida.weebly.com/uploads/1/3/4/7/134716232/1a5605730e6c12d.pdf
    • https://cdn-cms.f-static.net/uploads/4461484/normal_601be4560de2d.pdf
    • https://static.s123-cdn-static-d.com/uploads/4485578/normal_60b744c14107c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://lipadune.pbworks.com/w/file/fetch/144412608/54954719645.pdf
    • http://xedenuw.pbworks.com/f/are_johnson_outboard_motors_any_good.pdf
    • http://jifesepapo.pbworks.com/w/file/fetch/144579078/collections_grade_7_guiding_questions_answers.pdf
    • https://uploads.strikinglycdn.com/files/508d4ab6-0bd1-4cad-a9ad-b153232d16d6/guvizevurasetusuxani.pdf
    • https://uploads.strikinglycdn.com/files/0d3c8d71-2618-4039-8fdc-c0b85c3064bd/best_gifts_for_dd_dms.pdf
    • http://gifavipa.pbworks.com/f/ejemplos_de_cdigo_en_los_elementos_de_la_comunicacin.pdf
    • http://feteselulo.pbworks.com/f/30848628980.pdf
    • http://jananevava.pbworks.com/w/file/fetch/144742881/legimojogapokufod.pdf
    • https://uploads.strikinglycdn.com/files/35a0cb38-312a-4a85-9635-c7f105e00d59/kotor_korriban_uthar_questions.pdf
    • http://sisagexal.pbworks.com/w/file/fetch/144520584/how_to_factory_reset_ipod_nano_7th_generation_without_itunes.pdf
    • http://ritijix.pbworks.com/w/file/fetch/144528579/transformers_dark_of_the_moon_full_movie_in_hindi_hd_download_filmyzilla.pdf
    • https://uploads.strikinglycdn.com/files/471d99b9-2481-460a-a94d-9b03ad389f0e/java_8_book.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8d5.bin
d47b283d83680ae7aa11701e75f2d61539c4a5dcf325d1ca3afff9614a0be6a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D5 4596 bytes
font_01_sfnt_off00010885.bin
58616ee173d6a255ac22e566e5236ad32dab934f28d95272b9b42dea16913f44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10885 11072 bytes
font_02_sfnt_off00012dc5.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC5 4324 bytes

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