Malicious PDF — malware analysis report

Static analysis result for SHA-256 50134dcb78650bfc…

MALICIOUS

PDF

71.0 KB Created: 2021-03-16 22:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 047edc58a4d81602d5d9f3699502c531 SHA-1: 02ad273ac72b91dc5762356ce336e3d950919275 SHA-256: 50134dcb78650bfc6f494e9987a9594675f69f51040d917c69f0ff9ab1f9bd64
104 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 identified as a phishing trojan. It contains an embedded URI pointing to 'https://lozipotod.ru/123?utm_term=axis+mutual+fund+stp+form', which is likely the distribution point for a secondary payload. The document body, though heavily obfuscated, contains text related to 'Axis mutual fund stp form', suggesting a lure to trick users into downloading the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/123?utm_term=axis+mutual+fund+stp+form PDF link annotation
    • http://xumukekuvag.22web.org/25906641158.pdfIn PDF document text
    • http://pigozolifafaw.iblogger.org/betopode.pdfIn PDF document text
    • http://zabunugakope.22web.org/pibujuxogaduke.pdfIn PDF document text
    • http://rotixumuzu.22web.org/15720602666.pdfIn PDF document text
    • http://vanesifonemume.22web.org/geguvowalamu.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/xafaxotaful/2663333192.pdfIn PDF document text
    • http://tupudenijusab.rf.gd/24911967286.pdfIn PDF document text
    • http://sosasofojatage.epizy.com/xekijejibune.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/66605659945.pdfIn PDF document text
    • http://fawivemepogu.epizy.com/90958216343.pdfIn PDF document text
    • http://jozusazagibazan.rf.gd/73837023902.pdfIn PDF document text
    • http://kepinud.rf.gd/buzetalelaxikuvemaja.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/cancer_de_mama_triplo_negativo.pdfIn PDF document text
    • http://sivonimowonaze.rf.gd/govarom.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/nibukubekesefa.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/35634566864.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/which_machine_learning_algorithms_to_use.pdfIn PDF document text
    • http://mefugoniwiw.epizy.com/nuzavu.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/41921930151.pdfIn PDF document text
    • http://gesesasogibigaw.rf.gd/yandex_browser_chrome_extensions_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/marojolijarozefazipatowu.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/gedajelose.pdfIn PDF document text
    • http://gozukuga.epizy.com/epidemiologia_clnica_fletcher_download_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/dirt_devil_power_stick_brush_not_spinning.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_off0000d902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD902 5244 bytes
SHA-256: 5fb1eb937d7a88feb3e4f5928a5d3a9f55aba62c8baef57ab1b1bc2b0d550bfc
font_01_sfnt_off0000eac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC3 10568 bytes
SHA-256: 063a7b73f30db760dcc916c1007c5d32d984b0ec0f8025767101bbce2af0f44f

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