Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee96addf5abc2f4b…

MALICIOUS

PDF

61.6 KB Created: 2020-12-15 00:44:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 491ce7557a9a6e67fc7494b176757a27 SHA-1: 9bcb4f6d68dacd7baa07b2112e800f95ef988eb8 SHA-256: ee96addf5abc2f4b425e6596dbb04a135a9d33545163b1198744c3d0756bf2a9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, trafffe.ru, which is likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, appears to reference 'Ritz carlton charlotte nc', suggesting a lure to entice users to click the malicious link.

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://trafffe.ru/123?utm_term=ritz+carlton+charlotte+nc PDF link annotation
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/320fbc976d2.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/sulub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401711/normal_5fbc80779d716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8fdd1bab135.pdfIn PDF document text
    • https://josilagowuf.weebly.com/uploads/1/3/4/0/134018629/dikomo_vigomufaf_dijujetuwikuzer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_5f9a535a2aaf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486763/normal_5fc9cf43d54a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6836ee9fc3622d5489bf7/t/5fc7002b56cd4459b3ad47d8/1606877227812/sapilarapilorevexi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3c655d26ff1194f85c811/t/5fce3742d336b863f0ed3ddb/1607350083144/class_10_english_solutions_kerala_syllabus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3d58812facd59cebf5847/t/5fc4ddfc7acac6192a59e480/1606737405541/command_the_morning_prayer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac642efc-ab4f-49f7-a577-19086a2098e8/alur_penegakan_diagnosis_atresia_esofagus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5306ac14dfd36fe0d8a55/t/5fc6e8443ac9c763f4c8471e/1606871108869/strava_training_track_running_cycling_swimming.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_off0000b631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB631 4768 bytes
SHA-256: e1aa41470c132217aaeafd1f50c5b7777401c20468abb759efee4d6f3022d501
font_01_sfnt_off0000c663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC663 10468 bytes
SHA-256: 2017aa473cec0b642bcd13482ebdf3c967dabbe9e0727116fbd1937a0472c67b

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