Malicious PDF — malware analysis report

Static analysis result for SHA-256 0301c17a4db742d0…

MALICIOUS

PDF

80.9 KB Created: 2021-03-18 14:19:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 2d22464d8bd64f431b042c6ab0943e62 SHA-1: b7109b1fe946e8fae80712552f4b875fbb992e49 SHA-256: 0301c17a4db742d0a016b14b4ce272974c3f4db7ed1e26ef6c74404f0c1c146a
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 external URIs, many pointing to disposable hosting, and a heuristic identified it as a link farm. The document body, though heavily obfuscated, contains references to game-related content and application metadata, suggesting a lure to disguise the malicious intent of directing users to external sites.

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://pelibifir.ru/wix?keyword=papa%2527s+freezeria+games+online PDF link annotation
    • http://tezoxefakalexo.sportsontheweb.net/banelaniridubudivokin.pdfIn PDF document text
    • http://xalowazejadiv.getenjoyment.net/28992226812.pdfIn PDF document text
    • http://supobesopo.mygamesonline.org/66343439092.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/warsaw_international_business_school_tuition_fees.pdfIn PDF document text
    • http://vobemosezo.22web.org/which_43_inch_tv_is_best_uk.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/wisesinonevogopudijuraf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/af544d73-cc83-4431-829a-76e7ba317173/wevosup.pdfIn PDF document text
    • http://puxetedategekex.epizy.com/tilip.pdfIn PDF document text
    • http://jijuzawipuvabuk.rf.gd/agenda_fiscal_2020_gratis.pdfIn PDF document text
    • http://lenixad.epizy.com/all_name_reactions_in_organic_chemistry_class_11.pdfIn PDF document text
    • http://jegozejixal.epizy.com/seores_del_narco_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3bb2a0-351c-48c4-a028-cbea024d7a8b/worksheet_1_dna_structure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd607d7-aa80-481e-904d-4e642800b600/scag_tiger_cat_mowers_prices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86d4884c-807b-4a47-a2d2-5e9d05726858/soccer_dribbling_drills_for_8_year_olds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c53d62-be0e-4a2f-ad82-d809810b9087/solution_manual_heat_and_mass_transfer_cengel_4th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e62fe84-39d3-4041-98f1-0010bd251353/66132833056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66adad8f-9ab5-41db-bacf-25266d0911d0/how_to_put_plantronics_plt_into_pairing_mode.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD70 5012 bytes
SHA-256: dfe171cab1de0961d2ed3e9a21c928ae34141e3b3b2d01f5f324a9a82808713b
font_01_sfnt_off0000ee62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE62 11160 bytes
SHA-256: d0cbd89aba0d063a68e7bf941b98406f909b300aeb2f683c42f1fd5c61196830
font_02_sfnt_off000112ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FF 16168 bytes
SHA-256: 794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8
font_03_sfnt_off00012805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12805 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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