Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27daf854d9e4e05…

MALICIOUS

PDF

86.2 KB Created: 2021-03-14 11:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 69fe3b8ddad1c2154357f0af67e7006c SHA-1: 6830bec06ff992762537ffbdbce76cb9518c428f SHA-256: f27daf854d9e4e054beb0978113f2a3289ad3f56f0c408d8daae76818b9bbb07
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting it functions as a link farm designed to redirect users to potentially malicious sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a strategy to obscure the true destination through a network of links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/wix?keyword=bob+hogue+exam+answers PDF link annotation
    • http://carbags.site/zonexao4ph0.pdfIn PDF document text
    • http://5-euro.info/fujedozkxkr.pdfIn PDF document text
    • http://instapodarok365.site/zaxiviridotagii3bnd.pdfIn PDF document text
    • http://xebubux.sportsontheweb.net/foxagaxenepixutuboriru.pdfIn PDF document text
    • http://idealicaufficiale.website/69981211189w89s0.pdfIn PDF document text
    • http://ecoservice-vlad.ru/the_secret_order_3_ancient_times_download4thla.pdfIn PDF document text
    • http://namelesssouth.xyz/what_is_the_gas_to_oil_ratio_for_a_mcculloch_chainsaw6nz2l.pdfIn PDF document text
    • http://idealica-italy.site/zajerelormttv3.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/WZUCihF/wrought_iron_wine_bottle_and_glass_holder.pdfIn PDF document text
    • http://swiss-gear.shop/dyson_vacuum_cleaner_replacement_parts2xibe.pdfIn PDF document text
    • https://cdn.sqhk.co/julubesaf/ghghihj/cytus_2_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/hgdhgge/muzimagesifaga.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/Yg4hijf/tenuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xiposebajuremi.rf.gd/java_platform_jdk_8u60.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_d5ad6e9ddbc242c8ac88652a9ad5acd8.pdf?index=trueIn PDF document text
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_3f7f98d725544618865e892cca29c92e.pdf?index=trueIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_76daa41988db47b3ab00e569f7f5054f.pdf?index=trueIn PDF document text
    • http://nibubatovavav.atwebpages.com/tenefifisekitugifo.pdfIn PDF document text
    • https://314f4944-3dd9-45af-b5ee-fc7f46c963e4.filesusr.com/ugd/73cb9e_d24bbad9c83d421c9a6a8a6f08e76c5c.pdf?index=trueIn PDF document text
    • https://c3e780e1-a1ee-422e-80b3-2bf79490ff1e.filesusr.com/ugd/dc7b26_8bb735cd5a214683b765012187162d31.pdf?index=trueIn PDF document text
    • http://vuwilup.epizy.com/27322085851.pdfIn PDF document text
    • http://jopavufugas.epizy.com/dahua_cctv_catalogue.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AA 5172 bytes
SHA-256: d30a20d915296ea2eebf507e4345b7af805293522c255a12db85095f7103187b
font_01_sfnt_off00011622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11622 11772 bytes
SHA-256: 42d715736e310c4c14338af52367ec5c4c4264876e8804c563d45cc59c31d5bc
font_02_sfnt_off00013dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DBD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.