Malicious PDF — malware analysis report

Static analysis result for SHA-256 323aa64b0ed8d02d…

MALICIOUS

PDF

74.1 KB Created: 2021-03-18 00:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e6cc516761683947278de15b5adfc9b SHA-1: 70ad2ee2fff6e651046e849d33cb5c8fff502227 SHA-256: 323aa64b0ed8d02d2ec365e076b519c1de1b469fd1e38b6b55ac6d62947ce9e1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, including one pointing to 'dafemum.ru', suggests the document is part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are commonly used to deliver malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/123?utm_term=christy+moore+the+voyage+piano+sheet+music
    • http://wonder-ita.fun/32763364283m151p.pdf
    • https://gijepeparo.weebly.com/uploads/1/3/4/3/134318767/funuwutaje-xumelegakul-kusaremoroko.pdf
    • http://storeplus.pro/3981240619540o1t.pdf
    • https://static.s123-cdn-static.com/uploads/4470540/normal_5feb63caedb4e.pdf
    • https://jizufuvarax.weebly.com/uploads/1/3/1/1/131164460/vobixewidobo.pdf
    • https://cdn-cms.f-static.net/uploads/4378157/normal_6035e2e8238b6.pdf
    • http://redtea.space/shih_tzu_puppy_feeding_guide5tcfz.pdf
    • http://wiwalubezit.22web.org/net_core_interview_questions_and_answers_book.pdf
    • http://covidcapsule.world/korusinomoxesejufusak2dkq8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jomabav.epizy.com/sunerusifuranujenazudawit.pdf
    • http://badiwofotafazol.epizy.com/70028645866.pdf
    • http://wulemarodexik.rf.gd/does_weightlifting_give_you_abs.pdf
    • http://fujimuwudoketiw.rf.gd/fekokuxajalegefiw.pdf
    • http://vinegufoxa.rf.gd/sta_rite_pool_heater_manual.pdf
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_67d4e9cde0414a8b9bb0b70e20df9a05.pdf?index=true
    • http://sipomivizipe.epizy.com/photo_emulsion_sheets_australia.pdf
    • https://bbaef297-c986-4b42-acb3-0fd65605e280.filesusr.com/ugd/e9fc71_d05d321e6d0b4762b87af0ebeb1eac76.pdf?index=true
    • https://05f6fcc2-a4c7-4d5b-b58c-97b640a93f4d.filesusr.com/ugd/74147a_c1364af505dc45d0ace07e8e59c6c4ba.pdf?index=true
    • https://6c49ff76-e13b-46da-8354-2e633d56f736.filesusr.com/ugd/211c2d_e9cc22983b5c42d1b5dd04be1dbc275f.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_off0000e086.bin
50252ae81933cd0a5500c433ba6761640e13c896ed002c35bcb228c8567845be
pdf-font-stream PDF embedded font (sfnt) at offset 0xE086 5380 bytes
font_01_sfnt_off0000f2b2.bin
5747e2e9fdc4d1398b4bea78e00683ddacd477b1f69cdcf377bed718602e8322
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B2 11856 bytes