Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e5c93c36c23012…

MALICIOUS

PDF

110.6 KB Created: 2021-02-16 14:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9aadac70ee1b72afb9156c8d5bee80eb SHA-1: f3bd503d0fe07c737435adc31a88acfadaed3a6d SHA-256: e0e5c93c36c23012ce4c76688410006c0bcdedcbb9d4467ab80c119c4551a2e1
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, flagged as a 'PDF_SEO_LINK_FARM'. One of the primary external links points to a URL that appears to be part of a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

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://druttle.ru/123?utm_term=what+does+dapple-grey+mean PDF link annotation
    • https://cdn.sqhk.co/semoxumid/iinjehd/slither_io_codes_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/pofoxubo/Ehdu5ie/press_your_luck_host_elizabeth_banks.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403687/normal_600ef0af8c384.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388158/normal_6016387fa548b.pdfIn PDF document text
    • https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/800024.pdfIn PDF document text
    • https://cdn.sqhk.co/nebinefis/zihSgdF/wawagodadekopewoxifeki.pdfIn PDF document text
    • https://maselevajaf.weebly.com/uploads/1/3/1/3/131398143/gadokabarop_jagefenidazotu_fabezemuwov_logav.pdfIn PDF document text
    • https://jadetikoj.weebly.com/uploads/1/3/5/3/135350844/6feece8d4e7c4.pdfIn PDF document text
    • https://cdn.sqhk.co/ruselaguzoda/hhzdhha/chat_rooms_app.pdfIn PDF document text
    • https://movalibixijol.weebly.com/uploads/1/3/2/6/132682530/xokefavez_mapapexesewesi.pdfIn PDF document text
    • https://sogifeni.weebly.com/uploads/1/3/2/7/132712483/cd2ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/vazisi/dnr_fishing_report_sc.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/free_woocommerce_templates_for_wordpress.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/chrome_os_iso_pt-_br_32_bits.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/vuveponovubarivuredakave.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/canon_eos_4000d_manual_mode.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24E 5696 bytes
SHA-256: 52f43d01634c4549e9a929883026591793fe4a5c93cadf198ec8bc5ec0f99efa
font_01_sfnt_off0000f65c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65C 5520 bytes
SHA-256: f97a701acd910136e929857dce0d3b817ead9c9e09b5493fb58200dbd1158294
font_02_sfnt_off00010910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10910 5772 bytes
SHA-256: 86375512530e9909bf731a8eab65fdfef693779d252572816ba2d38f9f7a34df
font_03_sfnt_off00011aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA5 4732 bytes
SHA-256: 8fba11514c971ca9891b84bfa043a384cc9aee47a75695ae50ea558c4628f0c8
font_04_sfnt_off00012a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A06 2328 bytes
SHA-256: 864cbe2c6973b44d2b71e19ffbffb2328dcb3759b07ceb43c11d5a372fc4956d
font_05_sfnt_off000134bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134BC 2108 bytes
SHA-256: d117309382da938f7dffedc42f90dd4217b4d540d75629b80669d975ecbc171e
font_06_sfnt_off00013e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E87 5972 bytes
SHA-256: c581643c1d68ca0428ec6dd5cb8c2cf367c09c2a29f6338bc249f9acc874ab57
font_07_sfnt_off00014dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DC8 15936 bytes
SHA-256: 150e9a399bae3ecd833568ef259c44f1a57bc32d872428e3de4d6e126757355b
font_08_sfnt_off00017ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CE4 17104 bytes
SHA-256: d3e256bb8230871b424dcd3c8028109a446b14b7cc7b57459ad1f62cd8ba2c3a
font_09_sfnt_off000195c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x195C4 5060 bytes
SHA-256: ca9aeeb2b7a23476dea8b1f8ab087daad5b1a5046766d7722a62ed0a8c762fe1

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