Malicious PDF — malware analysis report

Static analysis result for SHA-256 744fae092556046c…

MALICIOUS

PDF

67.6 KB Created: 2020-11-24 12:52:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2b7dcd9bbc0f3c420ba656d4278db2e3 SHA-1: 90969b582ee019c19e8f4280c1b235346e74c88c SHA-256: 744fae092556046cb5fc58b19e6806f9a2350032943967e5f724d278dd05895f
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://traffking.ru/strik?utm_term=amazon+browse+tree+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387808/normal_5f9c3a77e990c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379477/normal_5f8d06a8642dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472182/normal_5fb43ce787220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5faa6976e9417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_5f93cc2db2a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_5fad3cb6a8334.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f89360445020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_5f98918fde533.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/lijulijowivaze/44867993591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4f1db83-e19f-4b12-b4b9-fc819ef005b9/60531003913.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/90_day_fiance_yamir_and_chelsea_update_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f35a83c-d3df-4d75-98f4-596eac67a7e4/introduction_to_nuclear_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/zevorofedod.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/lijuveziso.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/types_of_discrete_probability_distribution.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_off0000bec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC3 5268 bytes
SHA-256: c9a612879c372f96fa7836c1795520de252f216941bdbf0ab4343e0661071f7a
font_01_sfnt_off0000d0a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A0 10300 bytes
SHA-256: fdbed56d0381513092fca7352b90b6277dfceb68d9568c5d23279b91b756af74
font_02_sfnt_off0000f3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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