Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae7cbae792f4976…

MALICIOUS

PDF

76.2 KB Created: 2021-04-05 15:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8c94d76a67e87a8bf2abf1ac9f8d3c63 SHA-1: 26ce30dccb70215889258d235a29a890fdc78db4 SHA-256: 2ae7cbae792f4976df71babe6c4174a898f6bceb9e3e327c6ea707f2eba97ce2
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 embedded URLs, with one prominent URL pointing to a site offering a 'flight booking form pdf', suggesting a phishing lure. The presence of external URIs and a link farm heuristic indicates an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pelibifir.ru/award?keyword=flight+booking+form+pdf PDF link annotation
    • http://buzevuzelape.mywebcommunity.org/bsc_agriculture_syllabus_2020_tnau.pdfIn PDF document text
    • https://cdn.sqhk.co/mixubiki/yJKiiig/60545491565.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/hd4gjpf/mettere_stickers_su_instagram.pdfIn PDF document text
    • http://tihefers.online/joput65eik.pdfIn PDF document text
    • http://umkatrade.ru/lubabajovh3qtm.pdfIn PDF document text
    • http://vixabaj.scienceontheweb.net/zejelufewamemoj.pdfIn PDF document text
    • https://cdn.sqhk.co/regomesu/hGhehdZ/toy_cars_for_toddlers_to_ride.pdfIn PDF document text
    • https://cdn.sqhk.co/vutabopi/qjfwUhh/balotijidudidonarati.pdfIn PDF document text
    • http://vodoroding.info/how_long_do_i_leave_splat_lightening_bleach_in8a1db.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/mBZgijj/euro_truck_simulator_2_police_car_mod_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/ahifgjK/the_sims_freeplay_hack_cheat_tool_without_survey.pdfIn PDF document text
    • https://cdn.sqhk.co/marezotije/vOje5ic/saxatepodobuxujuj.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/zsthjNU/rocket_launch_may_27_2020_live.pdfIn PDF document text
    • http://boevoenlp.com/wenudodegaxesavarelefotoosja6.pdfIn PDF document text
    • http://supportcopyright.net/mifejavumipodito7axes.pdfIn PDF document text
    • http://detonic-ro.website/bollywood_video_songs_download_2020_bestwapegv33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lezujepadu.rf.gd/aidetek_dm4070_manual.pdfIn PDF document text
    • http://jinesiwi.epizy.com/external_cladding_sheets_bunnings.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/72119262536.pdfIn PDF document text
    • http://rugoxesoteko.myartsonline.com/basaxisudosagix.pdfIn PDF document text
    • http://telatojewoka.epizy.com/algorithms_illuminated_part_2_download.pdfIn PDF document text
    • http://mufigodukusa.epizy.com/tiduleruwajuvivugesev.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED10 5228 bytes
SHA-256: 6f948b78e055829603186639c20f524534b3dddd549396e43e9e6e1990009061
font_01_sfnt_off0000feb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB1 10760 bytes
SHA-256: 23fdda007f8c7aea28e1ac3985a002c8836916b8916a6b10e48715153f0c566e

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