Malicious PDF — malware analysis report

Static analysis result for SHA-256 3012326f82b1be3a…

MALICIOUS

PDF

86.7 KB Created: 2021-05-03 21:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2c06fbabb8a4d0e385d5041b3fa49151 SHA-1: 284933958158bf2c4f2f91adb5974d512664df71 SHA-256: 3012326f82b1be3a6fc5d86374ab2e976c6c4ce9a19efc8d3c85b83b9c68d3be
176 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of a phishing or malware distribution lure. It contains a mass of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm designed to obscure the ultimate malicious destination. The primary malicious URL identified is `https://dugedepap.ru/strik?utm_term=cuales+son+los+personajes+principales+de+los+crimenes+de+la+calle+morgue`, which is likely used to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://dugedepap.ru/strik?utm_term=cuales+son+los+personajes+principales+de+los+crimenes+de+la+calle+morgue PDF link annotation
    • https://dunifavopugi.weebly.com/uploads/1/3/5/3/135312205/zufakasu.pdfIn PDF document text
    • https://buzotifosu.weebly.com/uploads/1/3/2/6/132695554/5718409.pdfIn PDF document text
    • https://sinidakebe.weebly.com/uploads/1/3/4/5/134591073/e03dd49dc.pdfIn PDF document text
    • https://nonejekorozu.weebly.com/uploads/1/3/4/1/134108542/weresadu_jatokibopapi_lodoxepiv.pdfIn PDF document text
    • https://pupuzufasu.weebly.com/uploads/1/3/4/7/134759867/pukuzemokovuz_miwovenew_fiderofolabaz.pdfIn PDF document text
    • https://molawaxurot.weebly.com/uploads/1/3/4/6/134699933/gakame_polofat_tajepasanutabo_balufafa.pdfIn PDF document text
    • https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/f085d37c5dc6.pdfIn PDF document text
    • https://zuzuvisaze.weebly.com/uploads/1/3/0/7/130738998/subetuxosasovabow.pdfIn PDF document text
    • http://bankrot-biznes.ru/rivevubizitnjhj.pdfIn PDF document text
    • https://viwoxinuzozaxa.weebly.com/uploads/1/3/1/6/131636825/kilimekagiforaz.pdfIn PDF document text
    • https://wigadanoj.weebly.com/uploads/1/3/4/4/134404864/9841652.pdfIn PDF document text
    • http://xxlmature.site/23367309028jfvmy.pdfIn PDF document text
    • https://mexupapomumag.weebly.com/uploads/1/3/0/7/130775103/7129069.pdfIn PDF document text
    • https://varemajog.weebly.com/uploads/1/3/4/5/134585454/penavun_xetipez_pajofejezuzuriv.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/how_to_plant_sprouted_vidalia_onions1i2zu.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
    • https://s3.amazonaws.com/zalomi/para_que_sirve_la_vitamina_d2_1.25_mg.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/jorixobogasexan.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/jizujolakapadovivojosawit.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/merit_badge_requirements_personal_fitness.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/kefuriwuvovavixilalaxodib.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/59750082809.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/rpg_maker_vx_ace_rtp_japanese.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_off000103a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A1 5296 bytes
SHA-256: 07491426f7eb2dc00da30b7abd882cadf3cf58dc426981f867d7ffd5ded0d3de
font_01_sfnt_off00011582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11582 12148 bytes
SHA-256: 2813347524de2844ac9dcc69b6c81c085653ced306a3e79414b3130efc1829eb
font_02_sfnt_off00013c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C4E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f