Malicious PDF — malware analysis report

Static analysis result for SHA-256 1115959c4d77df97…

MALICIOUS

PDF

78.6 KB Created: 2021-02-27 18:34:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b010c823125579aa3c548755d7190c7e SHA-1: ef00b8e2338178dd77400ae519c5914b9258da17 SHA-256: 1115959c4d77df979083d11ce386b58e39bf4c2d75e058089b8bd63ca4a2db51
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains multiple external URIs, with a primary focus on https://midufefew.ru/award?keyword=how+do+i+attract+my+twin+flame+back, suggesting a lure to a malicious site. The document body, though heavily obfuscated, contains metadata related to its creation, and the presence of numerous links to disposable hosting and link farms reinforces the phishing intent.

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://midufefew.ru/award?keyword=how+do+i+attract+my+twin+flame+back PDF link annotation
    • http://bebetadiruj.mywebcommunity.org/melibasowixunumekofup.pdfIn PDF document text
    • https://cdn.sqhk.co/lasukojizix/gaQgeIs/98560330693.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/the_poor_fisherman_and_his_wife_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/Mlhjyz1/truck_upholstery_kits.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/how_do_you_fix_a_washing_machine_that_wont_agitate.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/cuanto_cuesta_un_juicio_sucesorio_intestamentario_en_mexico.pdfIn PDF document text
    • http://lowafax.22web.org/swashbuckler_d_d_3._5_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tijatabov/i81xVia/90984430594.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/interpreting_path_analysis_results_amos.pdfIn PDF document text
    • http://dithetsen.xyz/amparo_indirecto_formato_civil5op1k.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/21191316829.pdfIn PDF document text
    • https://cdn.sqhk.co/widexerun/bjajdbT/full_name_for_kiki.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://s3.amazonaws.com/luworizesupox/34978797147.pdfIn PDF document text
    • http://zalaxorenisev.epizy.com/application_job_cover_letter_template.pdfIn PDF document text
    • http://gegavolaful.epizy.com/tafexiripiraniwexerim.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/fluid_catalytic_cracking_unit.pdfIn PDF document text
    • http://zabadiv.rf.gd/tds_online_payment_challan_281.pdfIn PDF document text
    • http://zoponoz.epizy.com/jevezejafig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAE 5136 bytes
SHA-256: ee707de85750eeff63c79ef661ef0cbcc17c7b6ed9c1d08576fa0a4bdc9f0907
font_01_sfnt_off0000fd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 9912 bytes
SHA-256: b7f52b5911ecb932493b3e976fdcf005bcf9b3c1060954a411162cd39c769015
font_02_sfnt_off00011f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F01 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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