Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f564bbfba4564a…

MALICIOUS

PDF

81.5 KB Created: 2021-03-15 11:23:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2af8269d5b054d570166252849316071 SHA-1: 30d03063914a97cb6f169c91ad08148167401fb7 SHA-256: 30f564bbfba4564acaeac979b074c8314911dbd5ba65dfa3228d6f856fe3d531
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to attract search engine traffic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=mythology+edith+hamilton+75th+anniversary+pdf+free+download PDF link annotation
    • http://megalit-korolev.ru/fibulutistykku.pdfIn PDF document text
    • https://wosabizovores.weebly.com/uploads/1/3/4/5/134577485/1009629.pdfIn PDF document text
    • https://cdn.sqhk.co/zinumazak/eEgcSWD/lego_green_ninja_mech_dragon_amazon.pdfIn PDF document text
    • http://lg-supportteam.com/4305640309930y8o.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/ha1mlMa/best_last_minute_hotel_deals_san_diego.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/8gg7gd3/hit_it_fergie_tiktok_lyrics.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/81944940270.pdfIn PDF document text
    • https://cdn.sqhk.co/fetebutujo/ly3MO1P/jingle_bell_rock_sheet_music_free.pdfIn PDF document text
    • http://stroymarketmetal.ru/how_to_clean_new_construction_hardwood_floorswew8v.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/mevofiwatudota.pdfIn PDF document text
    • http://tesekal.mygamesonline.org/59722148865.pdfIn PDF document text
    • http://ezfix.asia/wisiforeecvhr.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/80249110672.pdfIn PDF document text
    • http://xenalebosob.scienceontheweb.net/what_is_meant_by_theories_of_multiple_intelligences.pdfIn PDF document text
    • https://fisomekoxow.weebly.com/uploads/1/3/5/3/135326807/nupadotutoru_gaxifivekuxodix.pdfIn PDF document text
    • https://devojakosumu.weebly.com/uploads/1/3/5/3/135314674/1080498.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafodix.myartsonline.com/xinisojusakomagotolugo.pdfIn PDF document text
    • http://sanojepenot.onlinewebshop.net/xobekagufidu.pdfIn PDF document text
    • http://xovefopu.myartsonline.com/tizidesonefel.pdfIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_79df2fb8c17b40fa9b9ff729cd22c51c.pdf?index=trueIn PDF document text
    • https://e082cb0d-9c22-4a21-acb7-e2c6127a51d3.filesusr.com/ugd/ff0c06_db2290b6ee2f42528b4ff1bb5d8fce8b.pdf?index=trueIn PDF document text
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_b3bb5f86224b46e99bc4f59e413d85ad.pdf?index=trueIn PDF document text
    • https://ec5c17a1-061e-4a2c-a9e6-b3561ba71229.filesusr.com/ugd/299074_43929328a794417e9ec6181ad773729b.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD02 5916 bytes
SHA-256: 61fb2b60078f7b5a1e42111a09f39ac8dbe8541b2032018b92c2587749a3d4f8
font_01_sfnt_off0000f128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF128 2424 bytes
SHA-256: 496907ad48a2670ca1842b9c914008adce4e0fa6d542d3f18fa52c04714a8781
font_02_sfnt_off0000fbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC3 11080 bytes
SHA-256: 6fbeaaf83dfc2e9b69cfb7791551d0ccde48fe764501b7305ddde8e01e80248e
font_03_sfnt_off00012205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12205 16064 bytes
SHA-256: 1398bbf2dfd9cae4409d1d8ab67a79f495e147aa07cce54436be1c2862721d78