Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c6f98ada3a7faa…

MALICIOUS

PDF

181.1 KB Created: 2021-03-14 12:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fc984514b98e5ad3f633203ac2dab49 SHA-1: 21d65456ef910ce67353ed5b3772c4157e54e632 SHA-256: 13c6f98ada3a7faacdcfc140130199d19f813b6f77e9fa7f8f199fd0e73e32cf
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely for phishing purposes. The document body, though heavily obfuscated, contains text related to 'Wahiawa elementary school students', suggesting a targeted lure. The presence of embedded URLs and the overall malicious verdict strongly indicate a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://resalured.ru/wix?keyword=wahiawa+elementary+school+students
    • https://cdn.sqhk.co/kevemelis/irnoghg/ms-_dos_boot_files_for_usb.pdf
    • https://cdn.sqhk.co/simunenij/Igdjb9Q/lakilok.pdf
    • https://cdn-cms.f-static.net/uploads/4447646/normal_601dd76c176ec.pdf
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/nibubolotileguv.pdf
    • https://cdn-cms.f-static.net/uploads/4392472/normal_601d67ea27a3a.pdf
    • https://cdn.sqhk.co/tajiwikiter/JdijygI/tegefilizoxefarinozona.pdf
    • https://gijenufojuli.weebly.com/uploads/1/3/5/3/135335104/67e825dd4c75a.pdf
    • https://medowiwufaj.weebly.com/uploads/1/3/4/4/134480571/aae96fa7de9bffd.pdf
    • https://soneputud.weebly.com/uploads/1/3/1/4/131411150/1241489.pdf
    • https://zowukudikumo.weebly.com/uploads/1/3/1/3/131382828/lujolujuxep.pdf
    • https://cdn-cms.f-static.net/uploads/4476270/normal_604d3cc3275e7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_2c10cbc176194ce5bf2dbdc3ec0caa62.pdf?index=true
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_a406172d043b47cca0f13a09badaa9ce.pdf?index=true
    • https://s3.amazonaws.com/genijusemu/amcrest_view_pro_app.pdf
    • https://s3.amazonaws.com/xijalovelokolep/arjun_kapoor_new_movie.pdf
    • https://e6f9d1db-9bad-45ba-a188-0e8e378e8087.filesusr.com/ugd/99b222_66fbad370354494aa44a4e9c3a82da08.pdf?index=true
    • https://s3.amazonaws.com/wamatasamegu/2147365384.pdf
    • https://s3.amazonaws.com/ropidadegaxut/luvekusurabodilomigon.pdf
    • https://s3.amazonaws.com/saziwijaxodav/harry_potter_book_4_free_audiobook.pdf
    • https://s3.amazonaws.com/vidadaviwal/bunuzupepejejefit.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/critical_race_theory_book.pdf
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_a3791fbc3cc2441da2a2186269c1b643.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_off00028e27.bin
d2c782c59466d7d7a48685637fc126a9b02dbaca834989a0b93b7eaf181a8ab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28E27 5388 bytes
font_01_sfnt_off0002a067.bin
6206cbe09b518f5c58418b3c27a80506ac5a9a7d7864e67b7342491468e12a31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A067 11116 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.