Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda5d7d87dfe805d…

MALICIOUS

PDF

74.2 KB Created: 2021-06-09 08:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54174152bccca7b99e2bc25a069a58a9 SHA-1: 40356868bc12a088870614a7fcf3adece1c5d959 SHA-256: fda5d7d87dfe805d161c1aa867d818df7dc0a9d31d294b5a4fa9752b317a2c76
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine rankings or direct users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document's structure and the presence of numerous external links suggest it is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://inwebjor.ru/pbw?utm_term=filmyzilla+bollywood+movies+2020
    • https://cdn-cms.f-static.net/uploads/4481828/normal_6042c97fd3ba2.pdf
    • https://faworufobideped.weebly.com/uploads/1/3/2/6/132682851/5525315.pdf
    • https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/wojuw-wagigatemi-karejesisebeno-xafedununutig.pdf
    • https://palozemoxapido.weebly.com/uploads/1/3/4/3/134366311/4a01a060441959b.pdf
    • https://cdn-cms.f-static.net/uploads/4449205/normal_60144876e51d9.pdf
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/mejipetataz.pdf
    • https://tiwokixaxuvap.weebly.com/uploads/1/3/4/2/134235176/5608932.pdf
    • https://zumegopepotiko.weebly.com/uploads/1/3/1/3/131398003/4708067.pdf
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/dososuwulaxav.pdf
    • https://gowuriked.weebly.com/uploads/1/3/7/5/137505597/b8f00b0a1ff826.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c28ebe6f-b5e1-4c7c-9f0b-7dc83bd0943d/how_to_write_an_engineering_notebook.pdf
    • https://uploads.strikinglycdn.com/files/685c5754-c471-4737-83b7-8f22373a9a32/bivanujegubul.pdf
    • http://mejigulo.pbworks.com/f/jusuluzezuvulanezemojuv.pdf
    • http://betosaxugawi.pbworks.com/f/discipulado_novos_convertidos.pdf
    • https://uploads.strikinglycdn.com/files/a6e4f7ab-7878-4394-9b93-5c07f2c75071/17291480268.pdf
    • https://uploads.strikinglycdn.com/files/219d412f-e9ae-4cc3-8482-d88e6afaf8aa/jewodivoximamewewewibi.pdf
    • https://uploads.strikinglycdn.com/files/256f6956-189a-4ed7-944d-3234e5f52135/compound_adjectives_grammar.pdf
    • https://uploads.strikinglycdn.com/files/78ee06b9-2952-4c3f-b287-a7baba996401/23132791527.pdf
    • http://nagomax.pbworks.com/w/file/fetch/144678825/shikigami_magic_fairy_tail_magic_brawl_code.pdf
    • https://uploads.strikinglycdn.com/files/2a939938-1f13-438a-b923-953a1ee27a58/safety_marine_services_llc_abu_dhabi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e309.bin
522184fbf5ab353e4d4253d20b3a64f231a3eb60f0590b372888911b683f53d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE309 5548 bytes
font_01_sfnt_off0000f5f7.bin
5dce89b574693912d444da9fed2284a0c157860e5eef4a196326d14c0371d4af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F7 11464 bytes

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