Malicious PDF — malware analysis report

Static analysis result for SHA-256 74bcad4634aab03a…

MALICIOUS

PDF

87.9 KB Created: 2021-02-27 03:09:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f347a21421454ecdb3c800f2c44e5088 SHA-1: e78e411eaf237c5cb8a5af1c0d6f37f1c5b98ea7 SHA-256: 74bcad4634aab03a0990a8c4aa03c9ea252d5ae92abb5efc3fb09a17fbf76e07
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://midufefew.ru/123?utm_term=how+to+use+garmin+echomap+94sv', is directly embedded in the document. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/123?utm_term=how+to+use+garmin+echomap+94sv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377128/normal_5ffb839ba2987.pdfIn PDF document text
    • https://cdn.sqhk.co/jisokemefaz/jdUAibQ/ritofodotufizefozar.pdfIn PDF document text
    • https://dapevorejux.weebly.com/uploads/1/3/4/6/134695165/dativekir.pdfIn PDF document text
    • https://tagudosalanuku.weebly.com/uploads/1/3/1/4/131452811/24ed9.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/resumen_por_capitulos_libro_nada_carmen_laforet.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/dRhbQ5J/pixodafipav.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/jfVhehb/zombie_tsunami_hack_tool_apk.pdfIn PDF document text
    • https://bivupexas.weebly.com/uploads/1/3/1/4/131453521/vativepavigekudubobe.pdfIn PDF document text
    • https://cdn.sqhk.co/zojoguxuban/ZgjUheo/sad_ringtone_music_only.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370533/normal_5fdf4cf4e0e13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505096/normal_602c256c575a0.pdfIn PDF document text
    • http://arm-watch1.club/minecraft_pickaxe_clickerc9r3v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gosete/antutu_benchmark_apk_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/qbcc_referee_report_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/kdigo_guideline_2019.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/6759981138.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/funny_jokes_with_answers_for_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/atm_computer_network.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/caracteristicas_de_los_personajes_del_libro_los_crimenes_de_la_calle_morgue.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/petroleum_production_systems_2nd_edition.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_off0001190d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1190D 5672 bytes
SHA-256: 824e3337005b4bd7f6451118719e7195f61517dc80ba26236e522c4b44c7d5b5
font_01_sfnt_off00012c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C55 11140 bytes
SHA-256: 28728c5093251b66d7783a711dc408ca7379f3fcc97df1245afae24ae6cba73d

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