Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0bf14124679162d…

MALICIOUS

PDF

72.9 KB Created: 2021-03-20 04:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: df19d2c8b1f794b356f1b303d5bd556a SHA-1: 19ca205f1689e27dc00b8586bdd0092df99d0235 SHA-256: c0bf14124679162d203032d41d6f4d6ea93e01fa0c46d34843db9b6d5a406eb9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm on potentially malicious domains. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/award?keyword=oxford+bookworms+library+stage+4+great+crimes+pdf PDF link annotation
    • http://livemavuxedu.getenjoyment.net/15490219235.pdfIn PDF document text
    • https://lozofatogil.weebly.com/uploads/1/3/0/7/130739213/xonelek.pdfIn PDF document text
    • http://kunewalijaxuna.getenjoyment.net/oxford_english_dictionary_free.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/29929821751.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/edbed3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454575/normal_5fcd1001c9348.pdfIn PDF document text
    • https://vafoguvisijun.weebly.com/uploads/1/3/4/8/134887412/58c938609.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/auxiliar_administrativo_del_estado_temario.pdfIn PDF document text
    • http://zonitupupafof.sportsontheweb.net/kizonipimuxute.pdfIn PDF document text
    • http://rimiripa.mypressonline.com/us_passport_application_fillable.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/gupojuv.pdfIn PDF document text
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/8176179.pdfIn PDF document text
    • http://xilexevu.scienceontheweb.net/mini_jambox_connect_to_iphone.pdfIn PDF document text
    • https://lufuneliza.weebly.com/uploads/1/3/2/6/132682735/fibotipunolat_ramil.pdfIn PDF document text
    • http://fufirewavit.getenjoyment.net/kikibemogun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_6020bd3ed7bb2.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/zonadirunapeteboboz.pdfIn PDF document text
    • https://riganekonima.weebly.com/uploads/1/3/0/8/130874133/7cf9f2ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fatofejeripise.rf.gd/.pdfIn PDF document text
    • http://lemujiv.epizy.com/background_png_hd_free.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_off0000d661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD661 6056 bytes
SHA-256: f12452dc8d20aabcbebe370e2975291192629eb697e374cf738609149b5cf9f6
font_01_sfnt_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 12860 bytes
SHA-256: 61cc7ab2ad4dff5e530f05535cf087708ff398ea1cedcc1e8fa09f283f637bb1

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