Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe068e32355cceb…

MALICIOUS

PDF

82.1 KB Created: 2021-03-29 04:03:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 14140eb852da7c73efc7929a547e3994 SHA-1: 6ed70f56390d48706d2b432b1f0df3821a9a475a SHA-256: dfe068e32355cceb1f60f1539179058dd05d45c6afb27d87cde7d916bda2dbf5
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a suspicious domain ('lozipotod.ru') that is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious 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://lozipotod.ru/award?keyword=payment+of+gratuity+act+1965+pdf PDF link annotation
    • https://cdn.sqhk.co/pumopijaku/jdjanhg/heart_rate_monitor_watch_with_chest_strap.pdfIn PDF document text
    • http://mufosubofamar.mywebcommunity.org/59821811970.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/WPbgcgh/forza_horizon_3_mobile_game_download.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/how_much_does_it_cost_to_ship_25_lbs_ups.pdfIn PDF document text
    • http://gunofixe.medianewsonline.com/5004420528.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/0Uijjdr/man_down_apples.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e3fc94d-38b2-475e-89b9-0a744dae2594/abebooks_karl_marx_capitalism_theory.pdfIn PDF document text
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_61eeaf49ff224c5abe426c0312c697e2.pdf?index=trueIn PDF document text
    • https://ff536187-e25a-4bd2-965b-ff1113cf40b0.filesusr.com/ugd/bfcccc_62dde40428144c8084685658124cd0ef.pdf?index=trueIn PDF document text
    • http://gegurobaz.myartsonline.com/54154149312.pdfIn PDF document text
    • http://ludugatitabi.atwebpages.com/sabelonegarizak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bed26ed-bcf2-4220-aced-706599b9cca5/2007_jeep_grand_cherokee_ignition_switch_problems.pdfIn PDF document text
    • http://mipagolawalixa.onlinewebshop.net/the_end_of_the_affair_graham_greene_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d02ce14b-30da-43c8-b2ea-f636692e2c35/ruzafixowifesamowipuz.pdfIn PDF document text
    • https://f45985d3-969e-4a4b-a16b-f92b7c881388.filesusr.com/ugd/20da2d_328181724c3f48b799bcefd64971d5cd.pdf?index=trueIn PDF document text
    • http://bopiguxa.atwebpages.com/90159814047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55322ee5-ef3d-4935-b2a4-51232a872ee7/85078146067.pdfIn PDF document text
    • http://mojenuj.atwebpages.com/affirming_diversity_7th_edition_free.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/building_construction_book_download.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_off0000eb96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB96 5852 bytes
SHA-256: 81cf1787b0a4112c6c534a148f96cb09cb81aa910beaf18b91483d2ecc14479b
font_01_sfnt_off0000ff83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF83 11168 bytes
SHA-256: e8cc783ec978dd25e0869a34c2932686cc21e5ab20c4446a69d7b1f353f51548
font_02_sfnt_off000125d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D1 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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