Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe1d8d91f7f4b02…

MALICIOUS

PDF

78.9 KB Created: 2021-03-20 03:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39bf5b13654f542cc8e89bd4b11525b0 SHA-1: eb8f18be7636622d33856ffa3a9abb3e9d204939 SHA-256: ebe1d8d91f7f4b0228101f5b1580f0dd12f2bc137d5df50ba4dc6abc22f46b93
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://midufefew.ru/wix?keyword=telanthera+cardinalis+aquarium+plant
    • https://cdn-cms.f-static.net/uploads/4401538/normal_6030614b8c850.pdf
    • https://cdn.sqhk.co/duvapegoleva/iVvT3jj/39405572915.pdf
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/kimumute_nexufe_rogikewibo_nozug.pdf
    • https://static.s123-cdn-static.com/uploads/4459029/normal_60096a57066b2.pdf
    • https://cdn.sqhk.co/waxolulum/gilxAtS/13773910072.pdf
    • https://static.s123-cdn-static.com/uploads/4499999/normal_5fe24d1b69f62.pdf
    • https://cdn-cms.f-static.net/uploads/4470017/normal_60410e6e78b81.pdf
    • http://waxenotesanil.22web.org/cardo_packtalk_slim_manual.pdf
    • https://cdn.sqhk.co/surixirulol/Hjjjeje/8185336056.pdf
    • https://cdn.sqhk.co/noretokujazo/ghjdgjI/prime_video_free_trial_canada.pdf
    • https://jogojirodatu.weebly.com/uploads/1/3/4/3/134321770/tudota.pdf
    • https://cdn-cms.f-static.net/uploads/4387590/normal_602b070708a0d.pdf
    • http://lalikexitaxixix.getenjoyment.net/what_does_the_philosophy_of_nature_mean.pdf
    • https://cdn.sqhk.co/xopuxuvop/Egi9asZ/vuleg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nabifovu/ketarokatax.pdf
    • http://ladurabazidema.onlinewebshop.net/zemevoluxutejotatanepibux.pdf
    • https://s3.amazonaws.com/polexebuj/how_to_take_apart_a_keurig_2.0_to_clean.pdf
    • https://s3.amazonaws.com/varolexexus/ordering_rational_numbers_worksheet_8th_grade.pdf
    • https://s3.amazonaws.com/wolina/kaluzowep.pdf
    • http://rusuxagek.rf.gd/algebra_de_baldor_online_ejercicios.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_off0000f568.bin
a7214178c2377fa39d4cf969fc4481fd4785929b15c9cadb1b8c9a4aa1372fa0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF568 5388 bytes
font_01_sfnt_off00010787.bin
768b5f1d05f00d17003597aa831954f9c35784ca5a2661f2af282a59b314d32c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10787 11648 bytes