Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b7cbbbfc87d858…

MALICIOUS

PDF

264.6 KB Created: 2021-03-19 12:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5bf2a110fcf5acaae5d82711a2ada35b SHA-1: d47a70667b6efbe6dfbe6b38d2c24b8d279fc123 SHA-256: 00b7cbbbfc87d8585cd839796d8e74a173eacebbe6c7f671c87e4235b4e2b09d
104 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic for urgency lures suggest a phishing attempt designed to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jumiwimov.ru/strik?utm_term=super+mario+bros+2+japanese+box+art PDF link annotation
    • http://mumijivamivaxij.medianewsonline.com/arihant_biology_neet_book.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/37831062963.pdfIn PDF document text
    • http://sujimelowakolop.medianewsonline.com/ximuwo.pdfIn PDF document text
    • http://xugaguf.mypressonline.com/captivate_book_free_download.pdfIn PDF document text
    • http://keruluzo.medianewsonline.com/toefl_practice_test_grammar.pdfIn PDF document text
    • https://fodukajanewirom.weebly.com/uploads/1/3/5/3/135383911/4656493.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/gambar_asmaul_husna_dan_artinya.pdfIn PDF document text
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/9130161.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/download_film_percy_jackson_3_sub_indo.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/tonidogunowi.pdfIn PDF document text
    • https://deremufirig.weebly.com/uploads/1/3/4/8/134854029/jedeputixesikorese.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/jizab.pdfIn PDF document text
    • https://dovenokitumenu.weebly.com/uploads/1/3/1/4/131482991/82655.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/daletofodidovireku.pdfIn PDF document text
    • http://ludirobus.getenjoyment.net/roblox_magic_elements_reborn_codes_wiki.pdfIn PDF document text
    • https://jizawabule.weebly.com/uploads/1/3/5/9/135966138/balowopifob.pdfIn PDF document text
    • http://metarapuw.mypressonline.com/47033340933.pdfIn PDF document text
    • http://rowewuxeg.getenjoyment.net/zogonedosukugupo.pdfIn PDF document text
    • https://lexojonogi.weebly.com/uploads/1/3/4/3/134315697/9d04f37.pdfIn PDF document text
    • https://wiraxupafetob.weebly.com/uploads/1/3/2/6/132696263/5321689.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/bebojaraperudi.pdfIn PDF document text
    • https://tusozokusex.weebly.com/uploads/1/3/4/6/134678333/8107856.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xedemigu.atwebpages.com/hush_little_baby_man_song_meaning.pdfIn PDF document text
    • http://rovizomaguwex.atwebpages.com/bejolutozumozado.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_off0003d4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D4EC 5452 bytes
SHA-256: 0c924ac6361bce2705bc780b108683594f0d390440031a502ec83cc528345f10
font_01_sfnt_off0003e75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E75D 12992 bytes
SHA-256: e072729325b42c5b8a069203034274095b070721eea8694a10549bde73108844

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