Malicious PDF — malware analysis report

Static analysis result for SHA-256 16f16aa5b1a5138b…

MALICIOUS

PDF

68.5 KB Created: 2020-12-04 00:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d9e700c480eaccc306dc2143ebc4c0e0 SHA-1: 968eca2c5477d4770c90da4eeee86e0e8dbaa754 SHA-256: 16f16aa5b1a5138be0c6b36b27f938f39544a4dfe5fda22b93325c74901c313e
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 0.9998

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://traffset.ru/strik?utm_term=santa+cruz+longboard+pintail PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385230/normal_5f8ccba13aadc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376612/normal_5f9923ec21be5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453142/normal_5fbbd0abd88ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_5fa620f0b9a1d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/matriz_de_decisiones_en_ingls.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c2c46609fd0ee7aa328a/t/5fc52e1161e25426e1deebfb/1606757906374/helix_piercing_jewelry_cuff.pdfIn PDF document text
    • https://s3.amazonaws.com/gebaxovudofe/15776196090.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/les_mills_combat_nutrition_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a80047-bd38-4d39-8189-94c40cd1d142/the_eight_biggest_mistakes_investors_make.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/nolake.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1619768612547ed61873d/t/5fc42784a97599144e7b54c0/1606690692965/conan_exiles_building_tips_and_tricks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b81cc07-2434-42ce-bccb-702345fd0c5f/roxikeseronadeg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c162085bf90c0efc5341/t/5fc0d7bd3c02f22b9d2cf4c6/1606473662572/wosigiwazurewuzos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdff707acac6192a86cfb2/1606287217732/14454629854.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE0A 5120 bytes
SHA-256: d7f7cf7651e9afbb1813e38bb1b941a7033fe75fdd245b73717d4dc4a1368a61
font_01_sfnt_off0000cf68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF68 11292 bytes
SHA-256: 23e62f17efed920ed7cc5f9935c0789f7c5a34ec5693ae18978fca33b1f21f36
font_02_sfnt_off0000f5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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