Malicious PDF — malware analysis report

Static analysis result for SHA-256 3655f47d095fbb1b…

MALICIOUS

PDF

75.7 KB Created: 2021-02-12 20:27:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cf3cf859c9146531d3c3b8afa364cd9e SHA-1: 07e0c10e2c686b206196ed850f6ac355b8f0983d SHA-256: 3655f47d095fbb1b6641325cce2f9dd98800e8efbb27ae2f7d7cd36348da98f9
186 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
  • 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.
  • 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://jottigo.ru/wb?keyword=cocora%20alvaro%20mutis%20pdf PDF link annotation
    • https://cdn.sqhk.co/xavipinav/gftRZJo/kupozir.pdfIn PDF document text
    • https://febujularezot.weebly.com/uploads/1/3/0/8/130813651/3257759.pdfIn PDF document text
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/takugubago-ramapataranebaw-fuwafedebudexe-zuwozigul.pdfIn PDF document text
    • http://reduslim-sito.site/los_lobulos_cerebrales_y_sus_funciones41t9g.pdfIn PDF document text
    • http://frut-tree.site/final_destination_3_downloadoi3tg.pdfIn PDF document text
    • http://mugedly.xyz/nojarotobarowuofggd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424341/normal_5fe036cd24d44.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/jdpvgiP/daily_chore_checklist_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/nazalugewu/gBAgdlG/nfc_tag_reader_ios_14_fungsi.pdfIn PDF document text
    • https://cdn.sqhk.co/fedefuxu/id61rl4/37625194828.pdfIn PDF document text
    • http://presentinsta.site/gala_bingo_song_originalgz8qt.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/dh9gchh/john_travolta_bubble_boy_meme.pdfIn PDF document text
    • http://de-bewertung-889562.icu/tuwovomenvcxwt.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/d6hjjbw/flyff_ranger_skill_build.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/numunenoji/wapebesixegitumabezed.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_off0000ea37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA37 5264 bytes
SHA-256: 90800c02d6df3b70d3121a05607e876aa35fedcf98e43d3b50bb7a8bcf12810b
font_01_sfnt_off0000fc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0C 11228 bytes
SHA-256: 7ae57969628785ac697b16576e83e0fe5ebd342caffc3a5718afd669c11ff3b4