Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae151fdaa55b031c…

MALICIOUS

PDF

71.9 KB Created: 2021-01-23 12:35:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a42a9aa713c0621ab38c115d67ea1a62 SHA-1: 8e4fcd9608d9d89248a77bb27c43667d30925713 SHA-256: ae151fdaa55b031ce8c2147a63c4cddf52e4f57f27c9339ee80dd26b8255fade
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a website disguised as a search result, likely to phish for user credentials or deliver a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing or malware distribution 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://jacksth.ru/123?utm_term=restaurants+in+grapevine+with+a+patio PDF link annotation
    • https://site-1180311.mozfiles.com/files/1180311/rasosijuna.pdfIn PDF document text
    • https://site-1172403.mozfiles.com/files/1172403/28071580212.pdfIn PDF document text
    • https://site-1168020.mozfiles.com/files/1168020/wiwanedurapugufapuwe.pdfIn PDF document text
    • http://juzibekemuvur.iblogger.org/1277119393.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/jgghbij/10876227118.pdfIn PDF document text
    • http://desekikimok.22web.org/xofekazazifaretubinogofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/bulenudunonatoze.pdfIn PDF document text
    • http://visasefiji.rf.gd/award_show_bollywood_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/23574687930.pdfIn PDF document text
    • http://terefikug.epizy.com/albinismo_genetica.pdfIn PDF document text
    • http://tadudaxejede.epizy.com/kvs_admission_2019-_20_form.pdfIn PDF document text
    • http://sarirepenibe.epizy.com/android_studio_emulator_black_screen_ubuntu.pdfIn PDF document text
    • http://xodemomawul.epizy.com/baixar_badoo_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/tamasha_hd_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/clock_face_template_with_minutes.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB2 5208 bytes
SHA-256: d471dc9c30b7e6b309c9766460a028c2d43e50bd2b774c294e4ddb4b13d8bdbd
font_01_sfnt_off0000ee82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE82 10548 bytes
SHA-256: 9ca873ba59eb926ec17bff2233deb82ffd4d2c7bad909acc48261f99479850cb

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