Malicious PDF — malware analysis report

Static analysis result for SHA-256 027c9f02d0672fd5…

MALICIOUS

PDF

155.2 KB Created: 2021-05-11 12:16:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c82b255e1eb6d479c098d0c00950617 SHA-1: 704b4cf471d14b4b97e75d26f512540973d757b3 SHA-256: 027c9f02d0672fd5402ee5dfa5ed5968786e078c5f09163415f9b952677c2a90
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to be related to search terms, suggesting a phishing or redirection attempt. The primary malicious IOC is the external URI pointing to a suspicious domain, likely intended to deliver a secondary payload or lead to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=char+broil+electric+smoker+turkey+recipes
    • https://zetovesejideze.weebly.com/uploads/1/3/1/4/131482946/948115e850f1.pdf
    • https://cdn-cms.f-static.net/uploads/4475989/normal_6016753e60300.pdf
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5ff1857846f9c.pdf
    • https://cdn-cms.f-static.net/uploads/4421039/normal_5fd7c5d125849.pdf
    • https://mifuvepezomiluf.weebly.com/uploads/1/3/4/3/134312517/takukuxijekow.pdf
    • https://cdn-cms.f-static.net/uploads/4404123/normal_606cb52c0b28c.pdf
    • https://cdn-cms.f-static.net/uploads/4500417/normal_6014eb10e456f.pdf
    • https://sixojatem.weebly.com/uploads/1/3/4/6/134650300/burafimusad_kesujejudebapi_sovatu_xunetewet.pdf
    • https://static.s123-cdn-static.com/uploads/4370056/normal_600592e4e0c76.pdf
    • http://trysucre.pro/report_cars_parked_on_double_yellow_linesidfqr.pdf
    • http://topmassage.net/murejoxoxadidatevapjwzw.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • https://cdn-cms.f-static.net/uploads/4393625/normal_602de602a5fd0.pdf
    • https://static.s123-cdn-static.com/uploads/4426269/normal_5feccbe8b67b9.pdf
    • http://duperalenow.22web.org/guitar_world_acoustic_magazine.pdf
    • http://reduslim-shopofficial.site/caracteristicas_de_los_algoritmos_finito1bdn1.pdf
    • http://mattelipsticks.site/64454403740lv4wv.pdf
    • https://kororopimebopam.weebly.com/uploads/1/3/4/6/134645688/duseja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fefuvorezikoko.epizy.com/danewokotizatitix.pdf
    • http://dajajubofu.rf.gd/zipufosexatanigukojo.pdf
    • http://rexagoxew.epizy.com/ap_housing_online_application_form_2019.pdf
    • http://jajowisomipuw.epizy.com/antihistaminicos_nios.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_off00022417.bin
112bdac4666c7c75a44ca66511b9185bc3694008e0891cecdd63fd6fc2d6604a
pdf-font-stream PDF embedded font (sfnt) at offset 0x22417 5384 bytes
font_01_sfnt_off0002363e.bin
e9f42766feba289b7231648fb095241ffa8f6df379691b6bca80bca92e417345
pdf-font-stream PDF embedded font (sfnt) at offset 0x2363E 12156 bytes