Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e559086c6ea3216…

MALICIOUS

PDF

88.9 KB Created: 2021-05-07 00:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7410056e1b31f32d9cae30f87bd79f5b SHA-1: ed0bd62b45cd9c4dbe3e77a3715bd522f0ff9a45 SHA-256: 0e559086c6ea32162f4b0aec03c0df197043caf04aa83f1ae52a6abaa1ebb7b0
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The document contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users. The primary URL, 'https://soxebez.ru/strik?utm_term=how+do+i+put+music+on+my+sandisk+clip+sport', suggests a lure related to a common search query to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=how+do+i+put+music+on+my+sandisk+clip+sport
    • https://cdn.sqhk.co/rapekajebema/a7Tjbjd/26337500826.pdf
    • http://kernig.store/jasper_report_export_excel_example_java_code2ago3.pdf
    • http://pollsexpert.com/kidotaravmghaj.pdf
    • http://itayoga.space/nanugukevonod79dsp.pdf
    • http://vengriya.space/argentina_football_league_scheduley6cyw.pdf
    • http://kofupum.mygamesonline.org/fapazarifegezugubom.pdf
    • http://sugakibabusu.scienceontheweb.net/cry_freedom_oxford_bookworms_download.pdf
    • http://fozogadixanemo.iblogger.org/62465827376.pdf
    • https://cdn.sqhk.co/molodomo/gihjDIq/tie_dye_hoodie_and_sweatpants_set_men_s.pdf
    • http://reduslim-sito.site/chicco_keyfit_30_car_seat_user_guidea03a6.pdf
    • http://trydouche.xyz/how_to_find_your_hawaii_tax_id_numberdnf2w.pdf
    • http://afterdealer.pro/how_to_use_a_manual_boost_controllerh9d0p.pdf
    • http://saxefitipar.iblogger.org/fevevolag.pdf
    • https://cdn.sqhk.co/ributexovek/zjakihM/vefitugeg.pdf
    • http://ooovseanalizi.ru/tafsir_al_quran_online_indonesia0a00m.pdf
    • http://islandlandscapesbb.com/16728862769e6xmk.pdf
    • http://kinerexasuxemo.getenjoyment.net/king_james_bible_archive_org.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_1e5f3f0fb9134b5e8b81a02760040dfc.pdf?index=true
    • https://20996a60-9695-4f45-8fdb-44bdc783da55.filesusr.com/ugd/c57cae_6ae8883689c4496c91cb5b37fab2a9fa.pdf?index=true
    • https://0404cab7-c021-4537-be79-420bcb2f88cc.filesusr.com/ugd/52c240_35eb253da4c1493d8016e9281bc5eddc.pdf?index=true
    • http://batapijas.myartsonline.com/45316744415.pdf
    • http://rujewaridulev.rf.gd/genetics_practice_problems_worksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cd1.bin
89d86f33e76db9a46e7d110e5d5e89b195394b9f3215c25ae207e9f7d37f2b02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD1 5436 bytes
font_01_sfnt_off00012f55.bin
1a28bed0e4f0c34282be7752342c7e12636300d7ef632a61a618aeef0d9f718c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F55 11464 bytes

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