Malicious PDF — malware analysis report

Static analysis result for SHA-256 52166637048d3aef…

MALICIOUS

PDF

74.5 KB Created: 2021-03-13 17:53:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b0b317f3968349cf8ee780fb8155002 SHA-1: 1dbcec09d1b288a90f5e6324ac9b49f8c8bbc14a SHA-256: 52166637048d3aef34b42a5ed09058674986572d0801b0b77b41b9e16e5b599c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a search result for recipes. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the overall detection profile suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/aws?utm_term=best+bread+machine+recipes+whole+wheat
    • https://cdn.sqhk.co/vuvesanap/ahejfcY/at_t_digital_life_service.pdf
    • http://rajenajodaf.iblogger.org/zoology_lab_manual_class_12.pdf
    • https://vebilikowuti.weebly.com/uploads/1/3/2/7/132740371/zalexazetutonufaza.pdf
    • https://dusomekekonipa.weebly.com/uploads/1/3/4/5/134580960/ed578767db70.pdf
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/rafeburisuzuk.pdf
    • https://watubozez.weebly.com/uploads/1/3/5/3/135346011/kiwob.pdf
    • http://weporobedamebu.22web.org/how_do_you_clean_a_keurig_machine_with_vinegar.pdf
    • http://vosaret.iblogger.org/rabipuzepi.pdf
    • https://cdn.sqhk.co/tobipamu/mtEjdQO/wejixuwupaxenenoror.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jajuzefob.rf.gd/kirby_vacuum_manual.pdf
    • https://s3.amazonaws.com/juzowilipi/notification_library_android_github.pdf
    • http://vugikalijuboxo.epizy.com/west_side_story_movie_300mb.pdf
    • https://s3.amazonaws.com/pugomonapoxuxe/39947081215.pdf
    • http://zimogaz.epizy.com/zajegajafisi.pdf
    • https://s3.amazonaws.com/piwupevivotixi/87090698552.pdf
    • https://aefbb2f1-1cfc-4a48-aab2-d72547d84173.filesusr.com/ugd/2f3ac6_eda06f655c0948ca9d2c8a080f6ae59a.pdf?index=true
    • http://tujevudaxuxos.epizy.com/norajajokupixivope.pdf
    • http://mibaxeruwo.epizy.com/lasaxetom.pdf
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_35d460493f36412187233fda58cf4744.pdf?index=true
    • http://wemojeduxikuzem.rf.gd/dobubifumoti.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_off0000e4dd.bin
8d9b3c89b5ac32ea08c352f3647d279bbe6f7612f8b9736cb5055ff4783b35f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DD 5592 bytes
font_01_sfnt_off0000f7c1.bin
c648ab9fdef8fc3913888fcd711393d5d881e07d4e0ede51321da7323d0cb247
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C1 10824 bytes