Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8b88a7dcd7ad353…

MALICIOUS

PDF

70.9 KB Created: 2021-02-24 10:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0dc9f82b2c46796ac7388d2644eb386e SHA-1: 5b882e8886accfcd280e3ed72d1ed0a1e9abb89c SHA-256: d8b88a7dcd7ad353c61551425a7246ebb0b7e9d6d1d26e8ce06336f73d6f45fe
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a common search query, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of an external URI and the overall detection profile suggest it's designed to exploit user curiosity to visit a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=what+is+cloud+nine+meaning PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367303/normal_601726dd5b99f.pdfIn PDF document text
    • http://laura-egorova.ru/37423651106ezjxh.pdfIn PDF document text
    • http://opit.space/9277177476637pfx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489429/normal_5feb24ee28fa7.pdfIn PDF document text
    • http://goshop32.site/28348877738zcygl.pdfIn PDF document text
    • http://shoop-fn.ru/81769756430mhwbj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378621/normal_5fde6577a3c7a.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/fuwuzerijofa/pimulesa.pdfIn PDF document text
    • http://novilomarira.rf.gd/vadoripiposukaw.pdfIn PDF document text
    • http://zewogukanonudut.epizy.com/55005946401.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/34766542389.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/briggs_stratton_elite_series_generator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/46461016186.pdfIn PDF document text
    • http://sosejelufati.epizy.com/phototrophic_bacteria_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/jivarunozubejup.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/esp8266mod_nodemcu_datasheet.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_off0000d933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD933 5272 bytes
SHA-256: 062451d30606e95c03b26a06f9da370e469aa035dcc06172c2bd0acec2409eb1
font_01_sfnt_off0000eb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB05 10392 bytes
SHA-256: e97fe56680a7d1837fa400cc686dddbca7c3d3c8545f7b781b40b59a939e414d