Malicious PDF — malware analysis report

Static analysis result for SHA-256 4981196358573f16…

MALICIOUS

PDF

75.8 KB Created: 2021-03-30 09:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 5eefbcf561bf2327bf1c6c1800354b81 SHA-1: 3e673b45e06e512775537016001620c6159e667a SHA-256: 4981196358573f162890f4f5aa8b0c8ae2f4e6647b26dfb9adf0fe7ac36fc425
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 a large number of embedded URLs, many pointing to disposable hosting or link farms, indicating a strong intent to redirect users to potentially harmful sites. The presence of external URIs and the ML classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://botokaw.ru/123?utm_term=doterra+onguard+beadlets+pdf PDF link annotation
    • https://cdn.sqhk.co/nuzinipaz/amHhcU0/56365794678.pdfIn PDF document text
    • http://sosebazud.22web.org/adverbial_conjunctions.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/cRlgegg/transformers_robots_in_disguise_season_4_episode_12.pdfIn PDF document text
    • http://domsale.xyz/490825502075z3f5.pdfIn PDF document text
    • http://jitokinut.iblogger.org/sipemulubalipi.pdfIn PDF document text
    • https://cdn.sqhk.co/nizolurinidi/3Ejhqjb/85813077447.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/Vum6K6p/fejex.pdfIn PDF document text
    • http://santaparker.store/27754068918r1gfk.pdfIn PDF document text
    • https://cdn.sqhk.co/wituruxa/ddNEjj3/the_lord_of_blackrock_bfa.pdfIn PDF document text
    • http://agreevudb.rest/59128004809kkk8s.pdfIn PDF document text
    • http://rebelliona.online/56055432524607if.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jumesuzev.epizy.com/third_person_singular_verbs_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/how_to_clean_a_singer_featherweight.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/el_arte_de_amar_michalina_wislocka_libro_en_espaol_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/6296844438.pdfIn PDF document text
    • http://podoremekuzepo.rf.gd/5_stages_of_grieving.pdfIn PDF document text
    • http://viwapuzajor.epizy.com/bokef.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/dadasawasikegavarifasif.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_off0000e7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A7 5348 bytes
SHA-256: 421a92ac0144afb998221f53766e15598ec4e00edbabee633996514c90a979ee
font_01_sfnt_off0000f9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E0 11444 bytes
SHA-256: 1bff0793cfa502bc729990d42e0fd90b4c7bf380e6365e67135a726153511ecf

Open this report in the interactive analyzer, or submit your own file for analysis.