Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba5ca9d8bb98ab5…

MALICIOUS

PDF

88.5 KB Created: 2020-12-21 06:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dcb68c612946b26b24d21c309a36e6f4 SHA-1: 68eb6e4cba3148db7f245903716c8b1297444746 SHA-256: aba5ca9d8bb98ab5fdca0fb3bb979eba1b0aa9c620543965bb8834d600cec8a9
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 0.9997

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://trafffe.ru/strik?utm_term=can+i+build+a+tiny+home+community PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416919/normal_5fbe99b519c0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417319/normal_5fa25cfcc42ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_5fb98d7ade5ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5fbf3bb4c009f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414175/normal_5fc4668749ca6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449172/normal_5fc770a5a591b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f78b91-830d-4f2e-8799-c9f2519d61f4/89250103808.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58f801452f90b7f04b470/t/5fcca994cded405bb8d452fd/1607248277011/vidakixoluw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf65c08845d09244fbd3c/1606284896763/fazugisomalopikobirenorir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41301ec4-6862-45d3-bd39-4dd09cb5453e/5749419786.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2814ec89e1c4b8fc8ad60/t/5fced9987379aa35976788d5/1607391641842/7283139841.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A45 5052 bytes
SHA-256: 3f2c78b3fe5f53057f1ccc0fa7bd3fb939c88dae3916286b8545a4c7890462ee
font_01_sfnt_off00011b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4F 10444 bytes
SHA-256: 8d4c9f190d598759a4c9078b99d3a817ec58392004ea5a37c874eebf553fb947
font_02_sfnt_off00013f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1E 16336 bytes
SHA-256: 18820e64b89489c6901bdbad9637cefc87d81bb55776bf10726fbc7439458c45

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