Malicious PDF — malware analysis report

Static analysis result for SHA-256 e957e41961dae08b…

MALICIOUS

PDF

87.3 KB Created: 2021-03-30 06:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8b6c68190d89f15f4536b102d1ee6c28 SHA-1: a652ec9ccbcffaea09a8b6ca23208c09b22067f6 SHA-256: e957e41961dae08b19dfc4ad6b359b661b1c3d63c24c7d6172eba41e1e6c7f11
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO abuse tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically classified as Pdf.Phishing.Trojan. The embedded URLs, such as https://dugedepap.ru/strik?utm_term=the+metamorphosis+quotes+about+work, are likely used to distribute further malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=the+metamorphosis+quotes+about+work PDF link annotation
    • http://sparzha.club/4578146829iw5qz.pdfIn PDF document text
    • http://tameenegypt.com/rob_bell_what_is_the_bible_study_guidelp9eq.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/jjggSjd/35380537966.pdfIn PDF document text
    • http://itagreen.fun/446624159446538n.pdfIn PDF document text
    • http://itchia.space/minagikifirubobigelesedtpksv.pdfIn PDF document text
    • http://nubolats.xyz/11614976601dhmnc.pdfIn PDF document text
    • https://cdn.sqhk.co/remonupode/g2VDAhh/nixavagamupiviponu.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/iiXJyod/chicken_run_characters_images.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/jdb5ifg/9059196794.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://dikawixum.epizy.com/58807023587.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/22252519738.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/how_can_i_update_my_tomtom_for_free.pdfIn PDF document text
    • https://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_4846c3a8c8ed4d00b537a79f9c1b7852.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vanatul/luteranismo_calvinismo_anglicanismo_y_contrarreforma.pdfIn PDF document text
    • http://fajufavutipo.epizy.com/dashavatar_amar_chitra_katha_download.pdfIn PDF document text
    • http://pirubezufo.rf.gd/furidixebajeroxo.pdfIn PDF document text
    • https://19508648-7f28-415f-8121-b57715dc1465.filesusr.com/ugd/9734e7_eea73348006041a1a922218e66c0203c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/consumer_report_best_refrigerator_2019.pdfIn PDF document text
    • http://zezajezo.epizy.com/indeed_career_guide_finance.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/idylis_humidifier_model_idu2235.pdfIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_c39f413ca50c42b298ab5cd49cbab355.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/sprint_report_jira.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF433 5176 bytes
SHA-256: 9a23c61e1cee9146b6881ab326d0d0fbc39687393ed34e7bf62daefcbffae3ab
font_01_sfnt_off000105db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DB 10788 bytes
SHA-256: 60025f78f8ebce02960bbff2cd62e10d3c997339c4a378733852503ba59e3acd
font_02_sfnt_off00012a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A89 16148 bytes
SHA-256: f2fe1b341ce625982f6229602509497cf1a9423964c663a7c58f6fce8010e377
font_03_sfnt_off00013f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F75 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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