Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f2e576191ec454…

MALICIOUS

PDF

73.7 KB Created: 2021-03-21 10:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1b3a21ed568aec6b989aff29666cbac3 SHA-1: cd8f8d9950064c50f7b033132b2dfeb1fed4d425 SHA-256: f0f2e576191ec4545ee728691fd9e1c392b00d05dcfd5d2380afea1ec07a4f24
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically linked to a search query about editing text in Paint, suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the high number of external links and the nature of the PDF heuristics point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://jumiwimov.ru/strik?utm_term=how+to+re+edit+text+in+paint PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4410414/normal_60026f8e7e74d.pdfIn PDF document text
    • http://vizit.store/what_type_of_oil_does_a_lawn_boy_mower_takehzbak.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/nakuxupujuwanosa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fe11d63295be.pdfIn PDF document text
    • http://mobutadaxez.medianewsonline.com/gazizenotuwabaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402261/normal_600397983fad7.pdfIn PDF document text
    • http://magufeju.iblogger.org/what_does_a_black_heart_emoji_mean_on_twitter.pdfIn PDF document text
    • https://xebazasasixuj.weebly.com/uploads/1/3/4/6/134641459/tusetufiwigeta_fivodaxi_kobafexa_xewuzurixok.pdfIn PDF document text
    • https://safasisi.weebly.com/uploads/1/3/4/4/134472516/bomajijujediw-dokudoximujuka-vosofezepususem-xezisos.pdfIn PDF document text
    • http://rinujajija.getenjoyment.net/37182785346.pdfIn PDF document text
    • https://lojamagimom.weebly.com/uploads/1/3/0/9/130969840/5481ffd.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/tepixofarube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_60421302c0d2a.pdfIn PDF document text
    • https://kikafizujugu.weebly.com/uploads/1/3/4/0/134012642/7346096.pdfIn PDF document text
    • https://gufulesem.weebly.com/uploads/1/3/4/6/134698375/c81ee.pdfIn PDF document text
    • http://vehicleusains.com/wifobokejelafulalotigomamiuovt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460476/normal_603c2ee3eba1e.pdfIn PDF document text
    • http://debodopox.iblogger.org/vorusevin.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/marketing_grade_11.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://josetevuj.epizy.com/abiudi_misholi_nimebaki_peke_yangu_video.pdfIn PDF document text
    • http://jopizegumi.rf.gd/elegie_faure_sheet_music_cello.pdfIn PDF document text
    • http://milodip.epizy.com/xeratij.pdfIn PDF document text
    • http://vezuzatutuxi.epizy.com/57914878398.pdfIn PDF document text
    • http://gexaforagugozen.rf.gd/independent_samples_t_test_apa_report.pdfIn PDF document text
    • http://gonoluripep.rf.gd/chotta_mumbai_malayalam_movie_bgm.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_off0000d76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76F 4652 bytes
SHA-256: ec3e09fd6fddf4647eeee55b22e83d148fe95319f315415c027a4f0abad69473
font_01_sfnt_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 10404 bytes
SHA-256: e67f7b48ef546214bfaf6dcc079f08ef6e50cc98845c01961f667832cf4be504
font_02_sfnt_off00010afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2