Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e99f1780045238c…

MALICIOUS

PDF

67.9 KB Created: 2021-04-03 20:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 63c90485674739e4249beb710e74a17a SHA-1: 4566b645876ca9b3ebd89feff1ccd098726bf280 SHA-256: 8e99f1780045238c6c2a54961820504717d01771f4001a635925625d3606c15a
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, suggesting a link farm or a mechanism to host multiple malicious documents. The presence of a download button lure and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or malware distribution attempt. The document's content and structure are consistent with a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/123?utm_term=emirates+nbd+online+forms PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368489/normal_5ff8575fd8f85.pdfIn PDF document text
    • http://tozonofer.iblogger.org/rijaxivoxomitenot.pdfIn PDF document text
    • https://tevipane.weebly.com/uploads/1/3/2/6/132681072/saxadebab-zopatawekaga-lijir-tapofafalig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370533/normal_60353a14692f0.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/kafuzi-lijov-daxin-ximutisi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5fd28300d5fc7.pdfIn PDF document text
    • https://ponosozuvovisu.weebly.com/uploads/1/3/4/6/134668850/timesafejugeku.pdfIn PDF document text
    • https://ketizinuxemuwiw.weebly.com/uploads/1/3/0/9/130969628/aaf97abd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368492/normal_6056d12f5073a.pdfIn PDF document text
    • https://domazatavaxagit.weebly.com/uploads/1/3/0/7/130775902/9543263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405654/normal_5fd154287e011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_6037455a77e21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471488/normal_5fde10988a164.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/78609629569.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/2005_nissan_murano_alternator_plug.pdfIn PDF document text
    • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_bab27283e1fe48d69a5eeeaec76cfb78.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/31111960373.pdfIn PDF document text
    • https://f4dd034e-00c7-465c-b850-fb2d75accad5.filesusr.com/ugd/769f78_7d45830155e042f7a40fce903a814258.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jinabom/vigivemakukifebu.pdfIn PDF document text
    • http://kesufelitam.rf.gd/buwojeroxarizinax.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/cadena_alimenticia_para_nios.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_off0000cc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0A 5152 bytes
SHA-256: 42af09b3538f2649ff80c189977ef7faaeef290efcc45a7bb03c45c0b51f58f1
font_01_sfnt_off0000dd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD72 11112 bytes
SHA-256: 9814563cdf8b6093bb2780d1bce40ea595e1cec4125e58a2d559923b4b2afcaf

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