Malicious PDF — malware analysis report

Static analysis result for SHA-256 8062eeffd61f4066…

MALICIOUS

PDF

75.1 KB Created: 2021-03-27 20:22:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e2d083028a008556d69ec962b0950988 SHA-1: 907d5791f83d4924698cad4ce678e17fca818d3e SHA-256: 8062eeffd61f40667dc693c1a0dfe1b9ca8627eb855109ebde11839bb6ee7fd2
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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 https://seumenha.ru/123?utm_term=cisco+catalyst+2960-+s+series+poe+datasheet PDF link annotation
    • https://boxesagako.weebly.com/uploads/1/3/4/5/134589877/nanedidab.pdfIn PDF document text
    • http://goodsfor.life/deer_hunters_moon_guide_2018_freek6l1z.pdfIn PDF document text
    • http://hallop.xyz/jutexukip6lt7.pdfIn PDF document text
    • http://guzoseta.getenjoyment.net/arm_controller_based_projects.pdfIn PDF document text
    • https://kutawujotin.weebly.com/uploads/1/3/4/0/134016956/9915878.pdfIn PDF document text
    • http://bejawutipage.mywebcommunity.org/31491159783.pdfIn PDF document text
    • https://tafubevodila.weebly.com/uploads/1/3/4/0/134016741/didimefifajaliwofer.pdfIn PDF document text
    • http://trixy-matrix.space/caballo_de_troya_3_saidan_gratisy89ui.pdfIn PDF document text
    • https://suxutusebosogu.weebly.com/uploads/1/3/1/3/131379987/1618489.pdfIn PDF document text
    • https://paxowamowutujaf.weebly.com/uploads/1/3/4/3/134322095/revoviwoxud.pdfIn PDF document text
    • http://sorebifisawug.22web.org/alleluia_psaume_117.pdfIn PDF document text
    • http://autokenn.com/25873068987xjcfh.pdfIn PDF document text
    • http://kprovk.xyz/swipe_basketball_2_apk_mod2ixi4.pdfIn PDF document text
    • https://rowagikej.weebly.com/uploads/1/3/4/6/134678960/lakikajofedu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bujijawuta.atwebpages.com/bizagi_modeler_tutorial.pdfIn PDF document text
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_d50df65a8d204f1393fe9a89f1e45059.pdf?index=trueIn PDF document text
    • http://pevurevakube.rf.gd/cdsco_gcp_guidelines.pdfIn PDF document text
    • http://fakeduzit.rf.gd/61857030814.pdfIn PDF document text
    • http://laganomezavarof.epizy.com/zenmate_chrome_extension_android.pdfIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_23239a5997914cc2b672600d2933e727.pdf?index=trueIn PDF document text
    • https://de99934f-f465-4d69-af5e-14f317c0a7c6.filesusr.com/ugd/4fea5c_e747a11021f34d828acb976060eef727.pdf?index=trueIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_0f8f93d02b1f4335a5c807419e1948c3.pdf?index=trueIn PDF document text
    • http://bikutuvuxaxixo.epizy.com/modovemalat.pdfIn PDF document text
    • https://www.flickr.com/photos/webernetz/37176457944In 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_off0000e650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE650 5784 bytes
SHA-256: 9105f99f0e677303215187d45617cd7be28d7f21adc0d3420fd62c29593bbb57
font_01_sfnt_off0000f9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FB 10724 bytes
SHA-256: 235a22fd06dd8597132b2cf8779cf599fa7a5906fb151edbcbd01180295da0bf