Malicious PDF — malware analysis report

Static analysis result for SHA-256 4190556825a1c71f…

MALICIOUS

PDF

73.6 KB Created: 2021-06-01 16:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 23e3c04174f2f35766c432dc049bb415 SHA-1: ce7e50313f9d881b77d3d36595a3ee6afc1f21ef SHA-256: 4190556825a1c71f81dfb61630fb547793a9ffcd2bd41a686c096424546aa43d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF document exhibits malicious behavior, as indicated by ML classification and ClamAV detection. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document instructs users to copy and paste content into a shell, a common tactic for executing malicious commands. The presence of numerous external links, including one to 'drafthe.ru', further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://drafthe.ru/pbw?utm_term=how+to+download+minecraft+mods+on+chromebook PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475397/normal_5fe2e2bf102d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420604/normal_5fcb100145cfa.pdfIn PDF document text
    • https://nirotagikul.weebly.com/uploads/1/3/5/9/135992947/1f4f1b20ac498be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422620/normal_603dd39853944.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417129/normal_5fcf44242a79c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_600aa101f237c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421330/normal_5fe291b34168f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380084/normal_5fcc7de0c00e9.pdfIn PDF document text
    • https://sikezenubotimer.weebly.com/uploads/1/3/0/7/130739875/xopetid_jasever_temipuvulu.pdfIn PDF document text
    • https://nenikekawudiw.weebly.com/uploads/1/3/4/4/134468161/genozotujax.pdfIn PDF document text
    • https://zedodunojoponex.weebly.com/uploads/1/3/6/0/136083391/862303.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tazijebep.pbworks.com/w/file/fetch/144427551/neniluj.pdfIn PDF document text
    • http://tazijebep.pbworks.com/w/file/fetch/144427521/dd_pirate_ship_map.pdfIn PDF document text
    • http://zekodunu.pbworks.com/w/file/fetch/144449802/how_to_have_intimacy_with_the_holy_spirit.pdfIn PDF document text
    • http://garigor.pbworks.com/w/file/fetch/144427959/mektoub_my_love_intermezzo_720p_download.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/f/josepadekanawuxuzamigewi.pdfIn PDF document text
    • http://foziwedugumu.pbworks.com/w/file/fetch/144453588/how_to_find_the_height_of_a_cone_without_volume.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B4 5520 bytes
SHA-256: 535a2cf79722e878a5c4326ab9a099342209c39df14685c4cc4002daa0dd920f
font_01_sfnt_off0000f45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45D 10804 bytes
SHA-256: 81f294d09a23661fcc54815ac8b3b0aac8bba51f2f9528c42cbbad7d6b6ea8ed

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