Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac438d696cc43cb…

MALICIOUS

PDF

92.9 KB Created: 2021-03-01 18:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcbe1eb809bda8256f481a82d44855b1 SHA-1: 6844b5f5d94158094c368ca44ea9809b1925e0bb SHA-256: 3ac438d696cc43cb49b092d6b134974cfa63e75b9885e87af567bdde8a9f1426
96 Risk Score

Malware Insights

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

The file was flagged by a machine learning classifier and ClamAV as malicious, with ClamAV identifying it as a phishing trojan. Multiple embedded URLs were extracted, many of which are associated with suspicious domains, suggesting a phishing or malware distribution attempt. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/123?utm_term=dark+alliance+2+pcsx2
    • http://fineagencyy.com/what_to_write_a_narrative_essay_topicskzp8e.pdf
    • http://uscreditinquiry.info/song_10000_reasons_by_matt_redman_lyrics7pm7i.pdf
    • http://tameeniraq.com/xijubigogoburuparo2zl1f.pdf
    • http://cryogen.me/a_friendly_introduction_to_analysis_kosmalajvco7.pdf
    • http://dkblogin-de.com/what_is_the_meaning_of_the_cop_and_the_anthem0tm7w.pdf
    • http://smcjd.com/hayward_de_filter_multiport_valve1ojka.pdf
    • http://qupieasy.online/turnover_intention_scaleomotc.pdf
    • http://konifipajig.iblogger.org/76486142457.pdf
    • https://static.s123-cdn-static.com/uploads/4383467/normal_5fe08028580b4.pdf
    • https://cdn.sqhk.co/fuluzezufe/jjcQgtQ/set_line_color_ggplot.pdf
    • http://amaryllis.space/54188207342a4rwa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://merizipu.rf.gd/gevifok.pdf
    • http://zotubune.myartsonline.com/11593290116.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b9b.bin
4bf12e447825d95f738b1d65e3e17cdf9738d8c4c80e7757b3852ea32c2605ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9B 3940 bytes
font_01_sfnt_off0001193c.bin
e5b8081792bec3a0ae6293ed1db959441306562d8399e8272d57458cec3ebfb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1193C 5188 bytes
font_02_sfnt_off00012aff.bin
d030e0cc728f5f276ec6a66b03fd2261d25ece732ed84ebc47e52d09c7235efa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AFF 11184 bytes
font_03_sfnt_off0001519b.bin
e378496ff4b4329e9698dc62510b77aa20d6148e4879fbbc576c593c8f820d6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1519B 16060 bytes

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