Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94f47ccc44e10b3…

MALICIOUS

PDF

67.5 KB Created: 2021-02-11 06:55:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 149a210b034e5773c7251779aa8f345a SHA-1: 97b3e47ae6ebd5e7e783963aee257b225f0166ac SHA-256: f94f47ccc44e10b3ec0a958b4caca7e67c2fcf5855d5b2ba9234942cbcdc6b0c
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wb?keyword=pap%20guidelines%20asccp PDF link annotation
    • http://cardioactiveuficiale.site/sheet_music_love_story_piano73seb.pdfIn PDF document text
    • https://kosipomorogimel.weebly.com/uploads/1/3/4/3/134307263/delaridebasidiku.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/933154.pdfIn PDF document text
    • http://salearea.pro/madagascar_orange_money_plus0i72x.pdfIn PDF document text
    • http://procripton.com/visiting_card_templates_wordvl241.pdfIn PDF document text
    • https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/a16e0403d80b6.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/chhMibY/zugiporowarizujetufapiwib.pdfIn PDF document text
    • http://wuderiwewilew.22web.org/nosufamiridapol.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/cQMmgff/98446485199.pdfIn PDF document text
    • http://lunotikipadul.66ghz.com/graphing_logarithmic_and_exponential_functions_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/asking_questions_worksheet_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/12961536697.pdfIn PDF document text
    • http://xowomowipuzu.epizy.com/sync_3_android_auto_update_date.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/chicago_manual_of_style_author-_date_format.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/wondershare_mobile_transfer.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_off0000cb96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB96 5144 bytes
SHA-256: d31bb1971df8cdba76fe63dd655828aeec949f1685c46d6ab96c5815f32de473
font_01_sfnt_off0000dd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD30 10560 bytes
SHA-256: 3dc55e38d41f83f4a8f15ecd1e751de21048ced4643a603bd3dc7cdae087e8e8