Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff0ddfdd2749597…

MALICIOUS

PDF

70.2 KB Created: 2021-02-22 19:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1dc87965abc449e828c9c6f4de1c8eb8 SHA-1: fb3c055c8de1f2e09734d687e0114dc8c85ccba8 SHA-256: 0ff0ddfdd2749597a2f37d9bf9f626a8587af80b2e4f46bbaefd161bb98946da
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://maypoin.ru/wix?keyword=michelin+easy+grip+composite+snow+chains+size+chart PDF link annotation
    • http://vivaxuza.iblogger.org/79251297053.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/eagjhdr/mupefafesudiv.pdfIn PDF document text
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/biwakal.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/cGjfbhf/37472218829.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/Kjcggja/fruit_smash_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fowijuseziju/hiedjbE/lubugatuseridesabiworul.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/iezjjhh/11403680608.pdfIn PDF document text
    • https://lasomuvexovip.weebly.com/uploads/1/3/0/8/130813571/vasijo-fabodi.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/CnigxyT/11656324493.pdfIn PDF document text
    • https://cdn.sqhk.co/zujarepifej/fyFgdge/bullet_for_my_valentine_crazy_train_album.pdfIn PDF document text
    • https://tupokigefadewun.weebly.com/uploads/1/3/4/7/134702618/ef5667ac60303bf.pdfIn PDF document text
    • https://cdn.sqhk.co/lolatonuvesa/Jjjgijj/stickman_zombie_games_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/hx5gi8w/cartoon_slide_sound_effects_free_download.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/widew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bexumonege.rf.gd/jetasaravagiweribupizuvos.pdfIn PDF document text
    • http://momugegunimex.rf.gd/xivikisusakelemuwumi.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_off0000d4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E5 5596 bytes
SHA-256: f5471d81724d7b7bf8c8dd614df81d04902971279d16b8e7e7ddaae14fe53565
font_01_sfnt_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 10524 bytes
SHA-256: 9790c0461d0e590cb82fd2345da9947b20b63647a1df09b47d57c2559e0f3a66