Malicious PDF — malware analysis report

Static analysis result for SHA-256 4365ac7b63cd3c27…

MALICIOUS

PDF

71.1 KB Created: 2021-01-29 03:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 33cf5173b6f271e2fd535e6ef4d842d2 SHA-1: f667e4895b97ea1679daf15dc23050ddafe347d4 SHA-256: 4365ac7b63cd3c27493d3e18ab69c7133a8333e668fd791e9c3d2c3bacc1f1df
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=matchland%20build%20your%20theme%20park%20mod%20apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494893/normal_5fc70f7b5055d.pdfIn PDF document text
    • https://pumewigegokofav.weebly.com/uploads/1/3/4/3/134317234/eb6d27737d8ab0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481528/normal_5fd31626534cf.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/haiymfC/good_short_life_lessons_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426060/normal_5ff18d3d4e8b9.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/icRxgcJ/super_mario_3d_world_wii_u_amazon.pdfIn PDF document text
    • https://duzunadi.weebly.com/uploads/1/3/0/9/130969775/2cced290c.pdfIn PDF document text
    • https://tewabigonin.weebly.com/uploads/1/3/4/7/134760563/1aa0ebcf80b42d7.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/apPBE1K/tovosivipafotuxepebipa.pdfIn PDF document text
    • http://waneboto.66ghz.com/12361272184.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiwusumusi.rf.gd/artex_elt_110-_4_installation_manual.pdfIn PDF document text
    • http://pirexorobeluj.epizy.com/92560677106.pdfIn PDF document text
    • http://sinodigewenewe.rf.gd/laments_crossword_answer.pdfIn PDF document text
    • http://kodadus.epizy.com/60056542836.pdfIn PDF document text
    • http://giratas.epizy.com/fisica_social_augusto_comte.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_off0000d94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94F 5444 bytes
SHA-256: 11b100a5ea6b3b96144cbb283ab4bbffc5eda81c27555fe8b14f5547b36440fe
font_01_sfnt_off0000ebb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB1 10484 bytes
SHA-256: b0b5b4bcb616fd8245570f6bff292a8150a0277a50d35a5cef4be4fd46ebe729