Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5153e00222e3b9…

MALICIOUS

PDF

84.3 KB Created: 2021-04-05 17:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6709acbb7674e3d51553b12c5616ffdf SHA-1: 7f48cce2fa776e0de802e7f9a50588e22aee1c57 SHA-256: 2d5153e00222e3b9061c13c4a58f1916621b76915fbe6b69cc64e4b0e50aa2bf
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, with the primary one being https://jumiwimov.ru/strik, suggesting a phishing attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=arby%2527s+secret+menu+area+51
    • https://mudasolujo.weebly.com/uploads/1/3/4/8/134886274/2746001.pdf
    • http://galufixagomedo.getenjoyment.net/ley_de_condominios_2020.pdf
    • http://bikelumonekodex.mygamesonline.org/ards_treatment_guidelines.pdf
    • http://kmikaerfs.ru/37516282610p6cwp.pdf
    • https://cdn.sqhk.co/numovasovev/1geohdO/48298598329.pdf
    • http://valigulepi.scienceontheweb.net/project_on_pile_foundation.pdf
    • https://cdn.sqhk.co/vafegijateno/cheDtZK/31963893212.pdf
    • https://cdn-cms.f-static.net/uploads/4371013/normal_606447fd0db5a.pdf
    • https://tinutenuku.weebly.com/uploads/1/3/4/6/134664278/nunexos-lerowos-dikiladonoxer-kajaripox.pdf
    • https://cdn.sqhk.co/rolaravez/wLhjEQm/76542948724.pdf
    • http://saduzemed.mypressonline.com/anemia_aplastica_pediatria.pdf
    • http://gufutaca3.xyz/man_swinging_golf_clubao592.pdf
    • http://comforfemj.fun/barber_shop_close_to_me_nowihnrf.pdf
    • http://mitutepoka.medianewsonline.com/nigatubareku.pdf
    • http://bimizuzi.sportsontheweb.net/xelebujo.pdf
    • https://cdn-cms.f-static.net/uploads/4490133/normal_603530fc3d38c.pdf
    • http://lowusonuraku.mygamesonline.org/tawikilonupogakuvo.pdf
    • http://podcard2020.site/super_teacher_worksheets_fraction_strips543i0.pdf
    • https://fubexomufepa.weebly.com/uploads/1/3/4/8/134850999/97a562c8.pdf
    • https://static.s123-cdn-static.com/uploads/4379606/normal_5ff034daedefc.pdf
    • http://mareson.getenjoyment.net/7874225776.pdf
    • https://cdn.sqhk.co/moxinivo/e1fcqNj/zupaxelimuletuxiko.pdf
    • http://instapriz365.online/78670492400cpona.pdf
    • https://xirovule.weebly.com/uploads/1/3/4/7/134749068/1774511.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lebusepuwiri.atwebpages.com/50017346043.pdf
    • 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_off00010a4d.bin
60dd29776b815b5586e67d29491c21550bb8ea84c64fc70633bfa04e6d0e4f6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4D 5356 bytes
font_01_sfnt_off00011c85.bin
af2ed502273689174de78277b29d914c6bf50e3a66b308db247bf335538609cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C85 11808 bytes