Malicious PDF — malware analysis report

Static analysis result for SHA-256 2adc04d0fdbfba22…

MALICIOUS

PDF

71.1 KB Created: 2021-02-22 17:09:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b58a38455822128902976075d6dee116 SHA-1: ca5a4d1bcfe4a0efbc9e11322b599e0bdd3f628b SHA-256: 2adc04d0fdbfba22d9306a6acaf7b113dfad0ab1e091c28801b1835c3889dd36
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 http://uptodate.site/27573836640a2dyt.pdf In PDF document text
    • https://valisuzikejuxeg.weebly.com/uploads/1/3/4/0/134017117/f86de6.pdfIn PDF document text
    • https://pimetukuke.weebly.com/uploads/1/3/4/0/134017259/9258793.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/qlpgcjg/motorcycle_riding_apparel_stores.pdfIn PDF document text
    • https://puzilefamurujuz.weebly.com/uploads/1/3/2/7/132712080/d78f2.pdfIn PDF document text
    • http://nnorm-id.com/vuxoletoric9azu.pdfIn PDF document text
    • http://salonvarna.com/86319071413m1jgg.pdfIn PDF document text
    • http://vas-rem.ru/kutile0n9rc.pdfIn PDF document text
    • http://shoop-ft.ru/lasamipimijomokitezulszrfa.pdfIn PDF document text
    • https://nolipugi.weebly.com/uploads/1/3/4/6/134652161/dakaloloki_zomiba.pdfIn PDF document text
    • http://kvyovk.xyz/98007175107t26zv.pdfIn PDF document text
    • https://kusafulidofet.weebly.com/uploads/1/3/4/0/134017607/kilubabemado.pdfIn PDF document text
    • http://xxlmature.site/best_video_editing_app_apkpure645zr.pdfIn PDF document text
    • http://registrat.space/how_to_factory_reset_gopro_hero_3_silver42a5r.pdfIn PDF document text
    • https://seumenha.ru/wb?keyword=math%20olympiad%20contest%20problems%20volume%202%20PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zasepo/excel_vlookup_indirect_sheet_name.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_off0000d582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD582 5988 bytes
SHA-256: 75eeb5f98f49c8f0f4d1cbbd7711225dbe64a72d1fe2c0ee10994c309da7b656
font_01_sfnt_off0000e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 10988 bytes
SHA-256: 5594210628a2d4a7348f188f18854a9bfc0a9b98ae10073c3036e1778728b36f