Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba46b30943c928cb…

MALICIOUS

PDF

75.0 KB Created: 2021-03-31 03:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a9a0e032dc35cb2aaf205fa913a94d13 SHA-1: 75170b7d9ec4f318503f5929e235e992029f144c SHA-256: ba46b30943c928cbe35be447d97ce141c5385f1eaebca058827a3654f937e4d8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/strik?utm_term=game+show+network+schedule+1997 PDF link annotation
    • http://komarovskii.xyz/2011_sentra_maintenance_schedulepm851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452217/normal_5fd2e77154aa7.pdfIn PDF document text
    • https://tinuwese.weebly.com/uploads/1/3/5/3/135300683/werolegesabamipabolo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383687/normal_6027baaa9b20b.pdfIn PDF document text
    • http://pedalini.club/nagufalofutasumodesagexufguss.pdfIn PDF document text
    • http://donbetosstreettacos.com/angry_birds_star_wars_free_shopping_apkm4g9z.pdfIn PDF document text
    • http://drenajkrasnodar.ru/14329138327dci2g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416789/normal_5fe704190bf49.pdfIn PDF document text
    • http://yandex-dostav.ru/how_to_add_math_symbols_in_latextbkga.pdfIn PDF document text
    • http://ontrade.top/99743520467ka1eh.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/ccleaner_slim_chipt7ttn.pdfIn PDF document text
    • http://inglassrus.ru/fanusimam6fy1.pdfIn PDF document text
    • http://muwabiva.iblogger.org/sojudi.pdfIn PDF document text
    • http://esclick.pro/naruto_shippuden_capitulo_76_audio_latinoa275w.pdfIn PDF document text
    • http://zoom-omsk.ru/campbell_biology_11th_edition_onlinetyslc.pdfIn PDF document text
    • https://dewisepiremutu.weebly.com/uploads/1/3/4/3/134318599/pituz_vopep_suxix.pdfIn PDF document text
    • https://tixowofo.weebly.com/uploads/1/3/4/5/134592641/pexajun-gazilapinu-fagebofabaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pivirujifija.epizy.com/2006_chevy_trailblazer_ss_manual.pdfIn PDF document text
    • https://18d8f76e-0bdd-4b96-b744-fee987eed1b0.filesusr.com/ugd/1486c8_b9be9211c0444704b435efd25b7c576f.pdf?index=trueIn PDF document text
    • https://12c9c681-cafc-4f88-93da-cb6f471fd49a.filesusr.com/ugd/f09a9d_a07809e6ba804ff5a848cf2137698dc6.pdf?index=trueIn PDF document text
    • http://bigokadurobogaz.rf.gd/fractions_worksheets_grade_8.pdfIn PDF document text
    • https://df4002df-ed14-466c-b758-10ced248c840.filesusr.com/ugd/3b03e6_0a4920a82d4242a3b5d9f1c74d6af354.pdf?index=trueIn PDF document text
    • http://vemewef.rf.gd/cours_d_algorithme_et_programmation.pdfIn PDF document text
    • http://gedigiwuba.epizy.com/gezirexemetebogese.pdfIn PDF document text
    • https://b0b8c8c5-0de0-49ea-8337-0a56b8a4e65f.filesusr.com/ugd/bf9dfc_167cfb0d5db54823a288f1aaf17df766.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_off0000e7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C0 5652 bytes
SHA-256: ddecb9437c0d5af61d35331e5b40a2f22c6a1fdf3c19f91606326a45a4f1532b
font_01_sfnt_off0000faee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEE 10396 bytes
SHA-256: 3ac46005308139b2eeab64da58cec31b74c386092a62a20fc2e89fd42f70d7f0

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