Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ff5c1dbf74ab26…

MALICIOUS

PDF

77.3 KB Created: 2020-12-06 10:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 112189772b263ed930f97ad8f33a1854 SHA-1: 91b6b1d10ffa1bc1ce23eb0c763526578d1304ee SHA-256: 50ff5c1dbf74ab26b48c1cb7554806a7f347405ad85e56ca01d9e290c3e0b276
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, specifically flagged as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Canada express entry sample form' and a URL pointing to a similar domain, suggesting a phishing lure. The presence of embedded URLs and the ML classification strongly indicate a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/aws?utm_term=canada+express+entry+sample+form PDF link annotation
    • https://vojumemij.weebly.com/uploads/1/3/4/4/134473557/jixatitajefamadukem.pdfIn PDF document text
    • https://dutazimu.weebly.com/uploads/1/3/4/8/134878831/mupudojitu_sarugidixopabak.pdfIn PDF document text
    • https://titezexi.weebly.com/uploads/1/3/4/6/134639754/poxagaxilusovet.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/nuselufuzo/75755734012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77d5e02-ac13-4fd0-9d09-9dcc2774ef63/4321125119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f6247bc-f985-4970-9b6d-43dc60669017/ejercicios_campo_semantico_5_primari.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/24770745439.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0ab7f81c9a2a0c696bad/1606290103967/holiday_chest_freezer_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/gapisepabidaredanipeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59fac80c-40d3-4ef0-a7c6-0ad3d5c5eb84/movie_box_pro_apk_latest_version.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd11dc7ad7de4c64a473a6/1606226397004/64601083863.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/fincen_beneficial_ownership_rule_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2afc08c-f56e-4c05-8705-0e0e9362d4b9/9603155594.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF047 5260 bytes
SHA-256: e07936a231235ea264eef542c3c2ad97255f08fcd72eba64d26c57dcc8b45939
font_01_sfnt_off00010222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10222 11304 bytes
SHA-256: 065bdac492d666562216fada91a56c0de62db6a4a4b31b162903b694a627603a

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