Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b40cd876f57364…

MALICIOUS

PDF

69.7 KB Created: 2021-03-17 16:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5cfc9dee655fbda9550acab6faa4b458 SHA-1: 81c7653125eab2e57d83586ad1804ac61ae1deed SHA-256: e2b40cd876f573640735312e65c945fd26be470077d3026b94713095ffbc7cf7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/123?utm_term=fill+in+the+missing+number+worksheets+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485943/normal_5fe920033b3b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481406/normal_5fce9c290a5a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368982/normal_5feb6a0ae03cb.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/9jgrUhg/asus_bios_ez_mode_boot_usb.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/57092852790.pdfIn PDF document text
    • https://cdn.sqhk.co/figoveraboj/ibFiaaH/press_your_luck_elizabeth_banks_cancelled.pdfIn PDF document text
    • https://cdn.sqhk.co/lokojagivel/XZjfjc5/vector_despicable_me_meme.pdfIn PDF document text
    • http://wusozupu.mypressonline.com/16193232308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5fd27d8bee9bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467589/normal_602bb4d38c65c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_600be4a12ab4c.pdfIn PDF document text
    • https://cdn.sqhk.co/renosopezare/xifihih/55393865992.pdfIn PDF document text
    • https://cdn.sqhk.co/namulofilox/h8hdLii/get_bundle_android_activity.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477137/normal_5ff1be9c3af5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/badodemebo/macos_catalina_beta_8.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/photo_calendar_template_2018_free.pdfIn PDF document text
    • http://pizibajavodup.epizy.com/bootstrap_4_cheat_sheet_grid.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/80477107905.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/binazagejupifelu.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/video_player_in_android_studio_code.pdfIn PDF document text
    • http://ninesunugata.epizy.com/cuvier_s_dwarf_caiman_care_sheet.pdfIn PDF document text
    • http://lajawul.epizy.com/zawaxarizi.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_off0000d11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11D 5496 bytes
SHA-256: 9d4cdba0a622e50ef6a3346d843853dc0f00d3be51e5b556aa6abe236a9cb4c2
font_01_sfnt_off0000e3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B1 10880 bytes
SHA-256: 82372e0db9f16246f64cd18fd10af509f59e1521078e1f69a4fc4958e3c21986

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