Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2f52a91f7e7d67…

MALICIOUS

PDF

75.6 KB Created: 2021-03-11 09:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d97b1cbab3edad606616bf3cf42a213a SHA-1: f79473ed39ffa1d049a7f8aa7c56d00d5acd404b SHA-256: dc2f52a91f7e7d671f7d0d28f74519138b0e0b21456d0732d8b19e993da6092b
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, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to 'xezojetit.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to 'consulta anticorrupcion tarjeton pdf'. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest it's designed to redirect users to malicious content.

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://xezojetit.ru/award?keyword=consulta+anticorrupcion+tarjeton+pdf PDF link annotation
    • http://dawajilimomod.iblogger.org/bifuvorurulavakemuxibesi.pdfIn PDF document text
    • http://prizinsta.site/82374558721d8rhh.pdfIn PDF document text
    • http://best-ital.fun/sentiment_analysis_and_ontology_engineeringn6a7o.pdfIn PDF document text
    • http://vexekene.iblogger.org/john_deere_lawn_mower_battery_gy22113.pdfIn PDF document text
    • http://best-ital.fun/72286791735r0w2p.pdfIn PDF document text
    • http://kukushka.space/92961950100by05i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bajewilogofiro.epizy.com/52772022015.pdfIn PDF document text
    • http://sodojok.rf.gd/is_social_media_research_primary_or_secondary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/effde594-2504-4858-a2c4-83e148002b02/2006_bmw_330i_exhaust_size.pdfIn PDF document text
    • http://barirenuvekesup.epizy.com/excel_vba_find_and_replace_in_range.pdfIn PDF document text
    • http://jabenesejamuji.rf.gd/76358619731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e976458a-469b-4afb-83d0-7bd7333e8893/what_are_the_art_disciplines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02ddc2b5-7104-4383-818a-5b48d7563a15/gudixojuletam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5d3981-b4b1-43a8-aee3-5bfbaa3f3cb8/legowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20854f65-0d90-426d-89f9-7342f24c3ae2/what_are_the_three_goals_of_business_writing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f0622af-0b71-4020-945a-c8a4e7a39b4b/47257357194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77fdf20-6964-4428-a1d0-93e9c0d76f1a/how_to_interview_candidates_during_covid-19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec56cf1a-c215-4a52-a298-1e497e08944f/90800606713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fff6c948-bedb-4420-ae07-8600d27694c0/nail_places_near_me_open_now.pdfIn PDF document text
    • http://gujimimokogofe.rf.gd/rusaxenamiruled.pdfIn PDF document text
    • http://gixopefujunop.rf.gd/59326328564.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_off0000e61a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61A 5132 bytes
SHA-256: 755f737eb780beaa7ea46538750c89e4cdaa8f2060ca972d3d71e04be1dd5088
font_01_sfnt_off0000f79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79E 12300 bytes
SHA-256: eabf90c440ef5eb349a56f14af1586de1563312574ed647b1f2755aead064804

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