Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb58ea90681a15a…

MALICIOUS

PDF

67.5 KB Created: 2021-03-02 02:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fb303f94c46c1a4e97220bbcd47d0a3 SHA-1: 2c75f88f062a970e754ad47078007aaa10307f32 SHA-256: bdb58ea90681a15aee660b4e837b79ae42685ca20c6f61a9a1a9639ab02ddce4
96 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document contains an embedded URI pointing to 'nipisod.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The presence of multiple suspicious URLs and the overall detection score suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=clifford+car+alarms+customer+service
    • https://zedabobosarafon.weebly.com/uploads/1/3/0/8/130813357/zizuxeguf_xebomikekirafud_wudopapizu_depezilisa.pdf
    • http://d-youtube.com/71884792409v5c9b.pdf
    • http://fringigejy.site/xorofasesovutegeratc297z.pdf
    • http://rasezatoxefu.mygamesonline.org/17531109076.pdf
    • https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/cb0a2.pdf
    • https://daxusumupazi.weebly.com/uploads/1/3/4/7/134702932/2297497.pdf
    • http://sdfsdfsdf.shaketorch.com/chennai_corporation_death_certificate_application_form.pdf
    • http://vipimuxatomefi.medianewsonline.com/36347635044.pdf
    • http://hookup682.site/how_do_you_tell_if_marbles_are_valuablegqksc.pdf
    • http://larediwavokib.iblogger.org/61020300745.pdf
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/6cb93.pdf
    • http://bofinaposo.iblogger.org/indesign_templates_newspaper_free.pdf
    • https://vesokawewewavi.weebly.com/uploads/1/3/1/3/131382886/sifuvedor.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bamusob.rf.gd/bumozomemegababemixa.pdf
    • http://tosodesuvivat.epizy.com/workout_log_template_google_sheets.pdf
    • http://sazororazinub.epizy.com/ghost_boy_movie_trailer.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_off0000ccfb.bin
7ff5fa78f5d14b83a5a52125f6cd850a395be0ff47db4b195878adfca1b568ea
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFB 5132 bytes
font_01_sfnt_off0000de5f.bin
b25866eee3bc70b5cb65186072f73e76bacc105e7517906aa183be3a7d551b85
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 10196 bytes