Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b177b7834662d56…

MALICIOUS

PDF

76.3 KB Created: 2021-03-18 18:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc284b0ea3061efb057ece272cba28dd SHA-1: dbabcc0e86c811fc7001a0d4517df31a04f5ecd1 SHA-256: 6b177b7834662d560035235f82f164c7e475de35aaed8222cfa839b59ed991a0
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through a malicious link, consistent with spearphishing tactics.

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://nipisod.ru/wix?keyword=alpha+sigma+rho+ambassadors
    • http://sozaxesugoj.mywebcommunity.org/bedinemigefopir.pdf
    • http://mevatupumave.22web.org/16061305011.pdf
    • http://hocostyle.ru/chamara_weerasinghe_dj_nonstopcqn0a.pdf
    • http://azorocheat6.xyz/amri_butterfly_valve_cataloguej3ibd.pdf
    • http://xiwakaravivomik.scienceontheweb.net/88812627133.pdf
    • http://xozanos.iblogger.org/4141293159.pdf
    • http://smartroom.pro/1155840629jfhpb.pdf
    • https://cdn.sqhk.co/pabopimi/cHS3Tjc/cach_hack_pirate_kings_ios.pdf
    • https://cdn.sqhk.co/vigeroti/Sjd5ghT/buzurovigok.pdf
    • http://nelodagavezes.mygamesonline.org/general_affidavit_template.pdf
    • http://viniveba.mywebcommunity.org/hp_elitebook_8570p_not_charging.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wesezuzuvalirik/apa_ethical_guidelines_definition_psychology.pdf
    • http://golujaxi.epizy.com/android_studio_google_assistant_tutorial.pdf
    • http://fomobiwudaz.rf.gd/aspen_guidelines_for_severe_malnutrition.pdf
    • http://dupivet.epizy.com/apologia_advanced_biology_module_14_test_answers.pdf
    • http://wovubixagoxix.rf.gd/rosupesap.pdf
    • http://poxalurerozelak.epizy.com/how_to_open_hp_probook_6550b.pdf
    • http://fibalikirikoti.epizy.com/9529144428.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deff.bin
7a743a219aa1089ce0bbcc8ff0da0b4c680c9e2a307677692e1c00d42ee90e92
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFF 3012 bytes
font_01_sfnt_off0000e9ce.bin
f9ebaca8c8ceadcffbc68fd458e7accc356652b89a1ddbefc10912b5d7343269
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CE 5504 bytes
font_02_sfnt_off0000fc4c.bin
5504aa09af2c2a1faf2b3154a4635343b480baccef037385323470c3607f3568
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4C 11752 bytes