Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc55123da8cd21e6…

MALICIOUS

PDF

81.1 KB Created: 2021-03-11 22:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 112b5f541faada69949aca3396cb3862 SHA-1: e2c71a0d9ee2640b35f4f62571c7e1add405923a SHA-256: dc55123da8cd21e6b151b5c6ec9c0f981fc905ce6506044dd77f10fe56b79cf2
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to phish user credentials or deliver a payload. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=the+road+to+wellville+movie+netflix
    • http://spain50off.info/timulevesabomodopowugivsxk17.pdf
    • https://cdn-cms.f-static.net/uploads/4368237/normal_5fd8739816689.pdf
    • http://favovuzoxegavix.22web.org/32801669601.pdf
    • http://hookup750.website/gomuwetobukiszsxn.pdf
    • http://favodokoleti.mypressonline.com/21098771506.pdf
    • http://copyrighytsupport.com/harvard_lampoon_bored_of_the_ringsplzdz.pdf
    • http://gvidilon.ru/dodge_durango_pulling_a_camperepqik.pdf
    • https://cdn-cms.f-static.net/uploads/4366324/normal_6044f6a48c383.pdf
    • http://slampochka.ru/7._1_our_planet_of_lifecyy3l.pdf
    • http://fegivate.medianewsonline.com/zixajegirabuwuwakul.pdf
    • https://cdn-cms.f-static.net/uploads/4417306/normal_6016e02178088.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zerejibixupav/timex_wr30m_battery_change.pdf
    • http://vumopigaw.epizy.com/juraga.pdf
    • http://wewodato.epizy.com/sizolotisugebujexozujejeb.pdf
    • https://s3.amazonaws.com/jusuberu/87303251744.pdf
    • https://uploads.strikinglycdn.com/files/f9d98db5-a186-4cb5-bd98-d2641f73cc69/ribarenijegezoxeluso.pdf
    • http://lumosaneja.onlinewebshop.net/91711720274.pdf
    • https://s3.amazonaws.com/fatisake/hisense_portable_ac_heater.pdf
    • http://vasugam.rf.gd/creative_and_critical_thinking_book.pdf
    • http://suxazetevuzo.onlinewebshop.net/79915024352.pdf
    • http://jozobudesurarab.onlinewebshop.net/68655545495.pdf
    • https://uploads.strikinglycdn.com/files/003af0b5-e697-48a4-8f4f-e27194a39404/21336969598.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_off0001001a.bin
4bb39cf3265ee742a9bc8a33419265d2bc63214d8cd22ecf12a34c026514fff3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1001A 5140 bytes
font_01_sfnt_off00011180.bin
a81437d4da051a64fd6ad750c419f3cebbf5f375bf37c1b7eadce6a0de0baa65
pdf-font-stream PDF embedded font (sfnt) at offset 0x11180 11360 bytes