Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e65b74b4db5f4c6…

MALICIOUS

PDF

77.3 KB Created: 2021-05-12 12:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9e5ee28ddac166e9a2294c7a97602a04 SHA-1: 1120f2ba18e98fefd05077fc1f9a9a7f375bc3a6 SHA-256: 4e65b74b4db5f4c642260b2d356d56078f77e563b7be9ee883dbe44e20e92d8d
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing campaign. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates the PDF is designed to host many links on disposable hosting, reinforcing the phishing or malware distribution intent. The primary URL, https://lozipotod.ru/strik, is likely the destination for the malicious payload or phishing page.

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://lozipotod.ru/strik?utm_term=ge+logiq+e10+datasheet+pdf PDF link annotation
    • http://rekatilugo.iblogger.org/aluminum_composite_panel_sheet.pdfIn PDF document text
    • http://vudipeledu.iblogger.org/popirevorezojuzodo.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/37317708485.pdfIn PDF document text
    • http://xiguxivevov.sportsontheweb.net/wojilotiwubijuxipawulorox.pdfIn PDF document text
    • http://vumejopiraxu.mywebcommunity.org/compuestos_inorganicos_ejemplos.pdfIn PDF document text
    • http://fitukogamoj.iblogger.org/avatar_tamil_dubbed_movie_1080p.pdfIn PDF document text
    • http://jisutuxoxaza.medianewsonline.com/62528932380.pdfIn PDF document text
    • http://rewetuxavix.mypressonline.com/xivako.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/raising_cane_s_menu.pdfIn PDF document text
    • http://punejew.mygamesonline.org/why_did_northerners_want_high_tariffs.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
    • http://wipadafefuxasi.onlinewebshop.net/assessment_guidelines.pdfIn PDF document text
    • http://dipokufaso.epizy.com/dialectic_of_enlightenment_verso.pdfIn PDF document text
    • http://ziputira.epizy.com/calculus_early_transcendentals_4th_edition_rogawski.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/75432166202.pdfIn PDF document text
    • http://dudaturid.rf.gd/300_logical_fallacies.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/how_to_check_my_location_history_on_google_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/jageloka.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/narrative_of_the_life_of_frederick_douglass_shmoop_chapter_10.pdfIn PDF document text
    • http://watijosanowo.epizy.com/kasuwiv.pdfIn PDF document text
    • http://gefuwaw.atwebpages.com/banquet_service_standards_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/57537557071.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_off0000e0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E7 5240 bytes
SHA-256: e84cbaf66a34be3c55e47c3c3ffc820af85358ce9427266127961a9a58956f01
font_01_sfnt_off0000f2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CC 11548 bytes
SHA-256: 0ed56b6f1cc365cb1f3753a14733a5b8094e6ded07c39771a22664e3f34f589c
font_02_sfnt_off00011a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A26 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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