Malicious PDF — malware analysis report

Static analysis result for SHA-256 db1dbc67c60d74ea…

MALICIOUS

PDF

79.0 KB Created: 2021-02-18 15:46:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 66782cce90ce5198e23b254a1b691730 SHA-1: 4181cedbbb4ef1c7aeff40a7b9b054d226ea906c SHA-256: db1dbc67c60d74ea4f4bb61627d4f07dc4ad1ea25810333434abfe75d3d7a776
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. An external URI pointing to 'maypoin.ru' was extracted, suggesting a redirection to a malicious site. While no scripts were explicitly extracted, the PDF structure and the nature of the detection suggest it may contain embedded JavaScript or exploit code to facilitate the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=new+moon+january+2021+astrology+leo PDF link annotation
    • https://cdn.sqhk.co/sezogitov/ajcg4SA/jujonirafeguwemizi.pdfIn PDF document text
    • https://tatisosef.weebly.com/uploads/1/3/5/3/135333589/xesekipuwazeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454822/normal_5feb992f085d9.pdfIn PDF document text
    • https://cdn.sqhk.co/pijuvedozuw/3oBErgc/face_the_music_definition_idioms.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/a5f936fff7eb.pdfIn PDF document text
    • https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/4727227.pdfIn PDF document text
    • http://converstarget.ru/fuwikositotewitivevipi683d6.pdfIn PDF document text
    • http://znasila.ru/android_terminal_emulator_root_permission_denied2fxgp.pdfIn PDF document text
    • http://tersq.fun/renal_calculixtowd.pdfIn PDF document text
    • http://lolkek.xyz/adjustable_bread_cutting_guidelhnnj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444104/normal_602b3b17b8601.pdfIn PDF document text
    • https://keregejuvuja.weebly.com/uploads/1/3/4/3/134345288/sojezudozenenoga.pdfIn PDF document text
    • https://cdn.sqhk.co/dawafawux/jhNaqie/cookie_cats_blast_mod_apk.pdfIn PDF document text
    • http://9gusevshop.space/wafoxivirukefufazufotju27l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/polexebuj/student_attendance_management_system_template.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/74229190901.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/39013982288.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/48574538034.pdfIn PDF document text
    • http://sanenuxaxegozez.rf.gd/chaitrada_premanjali_songs_free.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81E 5572 bytes
SHA-256: 06b6379e805f8cc3472bf83f2ae3257423ef3653e522f1da54074f718b2e55cf
font_01_sfnt_off0000fb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0C 6068 bytes
SHA-256: 7a02da73c5ff24218d04b188db7d31ceb9303d5dedd43b645f18a615a19d9b6a
font_02_sfnt_off00010abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABD 10312 bytes
SHA-256: dccc3c8603d986a7afd859604b147a77fdfe95a539d8370ae4eec894f6e05f0b

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