Malicious PDF — malware analysis report

Static analysis result for SHA-256 6988c681490a5331…

MALICIOUS

PDF

73.8 KB Created: 2021-04-26 23:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc9bda26a8cb5384c314ef8ef10f8b35 SHA-1: 7b1aa1f68ca68ce9660bc529437a541d712e79e2 SHA-256: 6988c681490a53313501616dd3fa9acfe27d5e58e3338c7b3642a1b5afcc2044
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to hearing aids and iPhones, directing users to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content.

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://botokaw.ru/strik?utm_term=how+to+connect+resound+hearing+aids+to+iphone+10
    • http://toxusuzom.mypressonline.com/93465533649.pdf
    • http://rexevivejegox.scienceontheweb.net/42593953763.pdf
    • http://lebedugipul.mywebcommunity.org/zibupamejax.pdf
    • http://rujisuki.mygamesonline.org/numerologia_cabalistica_gratis.pdf
    • https://cdn.sqhk.co/foxoxaze/ggidjdm/xaboxopukik.pdf
    • http://lazirawolewok.getenjoyment.net/mimarikalagepopiligetamab.pdf
    • https://cdn.sqhk.co/jivapereb/chhRifx/26835430218.pdf
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fcbf6ffeb1a6.pdf
    • https://cdn-cms.f-static.net/uploads/4426270/normal_604175f3bdafd.pdf
    • http://sevowina.medianewsonline.com/logitech_create_keyboard_backlight_not_working.pdf
    • https://cdn-cms.f-static.net/uploads/4414873/normal_6059f5e4cb4dd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c653f780-10eb-4ee1-bc87-db16d50f6cbd/how_to_count_characters.pdf
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_a72e72d44250412e9f7f0d55506c4468.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2666df1d-d2cd-4044-a7c7-6a831107bcf1/madame_butterfly_movie_1995_trailer.pdf
    • https://e510c2d5-567e-4a96-89ff-abc18316baf7.filesusr.com/ugd/8a9bcc_8368e85e734d4fdb910632ac74ff61a9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/92293d9f-c731-42cb-8151-66d0e03c1359/what_are_the_expense_accounts.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_off0000e13f.bin
24b1c602f2b14625eca87e7b734bcf55ff80ba395690524ec3391cb9be495664
pdf-font-stream PDF embedded font (sfnt) at offset 0xE13F 5548 bytes
font_01_sfnt_off0000f42c.bin
281d9206a6f21291ab9f0fe9214f94463949317b5b7155d8c6acc811d7d6198c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF42C 11088 bytes