Malicious PDF — malware analysis report

Static analysis result for SHA-256 b803289b0e927f6e…

MALICIOUS

PDF

79.6 KB Created: 2021-03-22 00:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa9db0d2f546f069c12662fcb71571c6 SHA-1: 7df0e1e98f4f79e00102395ba12949797af4d390 SHA-256: b803289b0e927f6e97db5bae7bf3dc832e118f309895bbd2f2fc7733bed53a90
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://xezojetit.ru/strik?utm_term=18+kriya+yoga+asanas
    • https://cdn-cms.f-static.net/uploads/4459941/normal_604fb06e38639.pdf
    • http://lorewipa.scienceontheweb.net/50366290538.pdf
    • http://xudisoda.66ghz.com/que_es_una_imagen_satelital_fotografia.pdf
    • https://cdn-cms.f-static.net/uploads/4387567/normal_600e609b0c5c6.pdf
    • https://cdn-cms.f-static.net/uploads/4384470/normal_6025fa55b5de1.pdf
    • https://static.s123-cdn-static.com/uploads/4490121/normal_6009218c14441.pdf
    • https://static.s123-cdn-static.com/uploads/4454430/normal_5fefd961c405f.pdf
    • http://vudasuti.mygamesonline.org/textbook_of_physiology_by_a_k_jain.pdf
    • http://gigezojiradof.scienceontheweb.net/66629997637.pdf
    • http://dabedera.mygamesonline.org/amistades_toxicas_libro.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kalanejaxutilif/4419260276.pdf
    • https://be5a03d2-cb36-429a-bb4d-4773f067dd3b.filesusr.com/ugd/b46ca8_c1677294b20446a8b8a5e07b1cdb6d77.pdf?index=true
    • http://teropisarazo.myartsonline.com/kosabube.pdf
    • http://ropurudowilume.rf.gd/84481008644.pdf
    • http://goxajuvudabo.rf.gd/anatomy_upper_limb_book.pdf
    • https://s3.amazonaws.com/jeworurowam/identifying_phases_of_the_moon_iv_answer_key.pdf
    • https://6184de0c-c318-42a7-882e-c5ddc63b817d.filesusr.com/ugd/1c8c1e_ba17abc2ffe143c4bd0146ff5ebb477a.pdf?index=true
    • http://robeguf.epizy.com/48850217168.pdf
    • http://gapoxuvopa.onlinewebshop.net/83373237062.pdf
    • https://s3.amazonaws.com/bivanud/jekiritujizabisugojazevab.pdf
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_e68d1d9b030341a098607a539066bfca.pdf?index=true
    • https://s3.amazonaws.com/sezewu/ligowu.pdf
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_8e6bb4bc33504084a72d1cecba1ee022.pdf?index=true
    • http://taxanateraza.rf.gd/84947230108.pdf
    • http://wugujub.onlinewebshop.net/15856441667.pdf
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_b3d77f7007934208b4473017bbe9a571.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc3d.bin
2ea3f9eb6f2ddafa589105e9197281c4dc652dbb682e474e08c68c3dae7dd5b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3D 5136 bytes
font_01_sfnt_off00010dd7.bin
d91eeaefe344fabd4667ad70cb5b7fff3990b587e2648c845efc78c2917cecf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 10260 bytes

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