Malicious PDF — malware analysis report

Static analysis result for SHA-256 6833929d16ec3d69…

MALICIOUS

PDF

80.7 KB Created: 2021-03-20 09:42:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0fda665904d93775445e3b21ad21d366 SHA-1: 37ea947d61e3a1a3c7747fe1fe4d7be287c485dd SHA-256: 6833929d16ec3d692e7f959690a47477e7579c809d3ff6b3b009202846e7268f
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 an embedded URI pointing to 'https://ponafet.ru/award?keyword=filipino+dictionary+pdf', suggesting a phishing lure related to a dictionary. The presence of multiple external URIs and a link farm heuristic further supports a malicious intent to redirect users to potentially harmful sites.

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://ponafet.ru/award?keyword=filipino+dictionary+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366063/normal_601bb2a77bcfe.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/8Q60wLq/puffin_web_browser_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417664/normal_5feb6af86c35f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392661/normal_5fd0defdeb92d.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/hdIghNu/digi_clock_widget_plus_2._2._0_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466154/normal_5fd0734dd24cf.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/hjjhjeF/goat_simulator_free_download_no_steam.pdfIn PDF document text
    • http://gebikatafexanu.22web.org/how_to_set_time_on_capello_ca-15.pdfIn PDF document text
    • https://cdn.sqhk.co/guranotup/Bk3qkij/gizuforofirozowixevexaba.pdfIn PDF document text
    • http://subaxidubuju.22web.org/88730735630.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rubaporejolo.rf.gd/fuxujazobabeno.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/37273091438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/823db057-117f-4853-b9ef-c10962dd7952/motorola_vervebuds_200_manual.pdfIn PDF document text
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_74a8eff8676145f9859af6125b2f26c7.pdf?index=trueIn PDF document text
    • https://d4bcd744-2348-4fe3-9006-05b2fcbd3cbd.filesusr.com/ugd/704566_af4dd62288b3400eb4bff887ecaac848.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1628e273-fba2-4f19-8570-9e92f0c67bd0/juegos_para_aprender_ingles_para_nios_gratis.pdfIn PDF document text
    • http://lazubabalitun.epizy.com/vous_nous_informez.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/bolide_slideshow_creator.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/zuxepuvakiwotakesoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/kdoqi_guidelines_diabetes.pdfIn PDF document text
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_afbb482363364b90b0fdfa554b4cae4e.pdf?index=trueIn PDF document text
    • https://7fe6b731-3703-45da-bcbe-faf39b4d3392.filesusr.com/ugd/880a7e_8b0a4c53e33a452590b8935f9160cf52.pdf?index=trueIn 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_off00010032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10032 5028 bytes
SHA-256: 56bd7c131760f9f5808b489f1d41df06cc8227c84ffbd54c85f969e417267a5c
font_01_sfnt_off0001116e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116E 10656 bytes
SHA-256: 923985b76dc737f32e24ca52f2f11581877674a08fb35e25de4d0820922fcf78

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