Malicious PDF — malware analysis report

Static analysis result for SHA-256 091f9c6e759a8394…

MALICIOUS

PDF

78.0 KB Created: 2021-03-30 03:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e627d6c24d878040e0cd5e34dac7c302 SHA-1: d8482f013dd034a6659d1b7f2a9b9f922fd4a50a SHA-256: 091f9c6e759a8394625e6bb428b28dc3bf4bafca6f91314ae254b5340a880f2f
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDF files, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • 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
  • 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://seumenha.ru/award?keyword=amnesia+lyrics+and+chords+pdf
    • https://palisuxil.weebly.com/uploads/1/3/1/0/131071308/3437387.pdf
    • https://barosowuni.weebly.com/uploads/1/3/1/3/131398377/xavevamefur.pdf
    • https://subutadenurafo.weebly.com/uploads/1/3/4/5/134581349/todiwo_gebanoregowabis.pdf
    • http://giocodigital.fun/tablas_de_centroides6o6jo.pdf
    • https://vonenefanor.weebly.com/uploads/1/3/4/6/134638091/8263626.pdf
    • https://lilexoben.weebly.com/uploads/1/3/5/3/135331811/wagiporomisek_kisutuxefenox_raxokito_xagiz.pdf
    • https://tuxinotem.weebly.com/uploads/1/3/4/8/134883911/bimojapinaj.pdf
    • https://kafuribawixunav.weebly.com/uploads/1/3/4/8/134897544/mapilemiten.pdf
    • http://todayit.pro/mubek2vu20.pdf
    • http://energytik.net/briovarx_osteoarthritis_enrollment_formy1oda.pdf
    • https://golisarupu.weebly.com/uploads/1/3/5/3/135317681/mavegowe_puratatekapo_gujujuwiwitire_ruxotexo.pdf
    • https://bewarovawizijus.weebly.com/uploads/1/3/4/4/134454629/8943261.pdf
    • https://kovajokuluvemu.weebly.com/uploads/1/3/5/3/135335912/9521534.pdf
    • https://mupipuko.weebly.com/uploads/1/3/4/3/134370635/e5cd90c5986.pdf
    • https://mejekuveko.weebly.com/uploads/1/3/5/3/135392268/sunotafumu_telolaperirak_fadotumatodif_zizokuduxirep.pdf
    • https://lizatupapej.weebly.com/uploads/1/3/4/4/134401074/xujigedi.pdf
    • http://fbcopyright-center.com/rixojotazokibal5awm7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rogugagatuf/how_to_make_a_wireless_communication_device.pdf
    • https://6f847715-c85a-45d9-ae5c-7c68cc800588.filesusr.com/ugd/6e100b_a1bdd82d8b2d4ddda9ff0b97b2548c7e.pdf?index=true
    • https://s3.amazonaws.com/lebejos/89233331376.pdf
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_1b1740d8fab747e78bebd153358a23ac.pdf?index=true
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_7368864ac51d4212bbd831009b14034c.pdf?index=true
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_9b8c29eba13f4734b61ca5c4c0c659d3.pdf?index=true
    • https://1416a32c-f91c-4ec3-9c10-bfdf610c7df7.filesusr.com/ugd/76de1a_88ec03582f574d7d89ba84b28fdf9850.pdf?index=true
    • https://s3.amazonaws.com/fikuvine/how_to_reset_a_samsung_tablet_without_the_password.pdf
    • https://s3.amazonaws.com/nafamaragisek/dodoze.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_off0000f35e.bin
0abcf3d5b9368ead8afad0c0e172a939db91ecdad996a863bc77504aec2dadcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF35E 5484 bytes
font_01_sfnt_off000105df.bin
061ac260a6048ebfde73ca6859225e9595c87e1ef90b8acf18204c5ef9d4c03b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105DF 10676 bytes

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