Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2a93bfb6c2633b…

MALICIOUS

PDF

72.8 KB Created: 2021-06-06 15:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b3d5aaa6a142a9db6353c6ff902c6892 SHA-1: 2623c36f7252a1e2bd0f6eff1b3d933bed876f7c SHA-256: 6d2a93bfb6c2633b4926b75d71127a26cee9c068a9a8250688c732b6b653dfa0
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://huntic.ru/pbw?utm_term=integrated+math+volume+1+answers+houghton+mifflin+harcourt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368471/normal_5ffb35cfed990.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499021/normal_5fe5ff4540a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_602bd963a2ae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411917/normal_606ae778ee96b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409114/normal_606397633d57e.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4379726/normal_60b656f34cb30.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4401714/normal_60b0639ab4768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486221/normal_6034061b5e501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_603e97656740e.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4447258/normal_60b11bb5ef584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369182/normal_5fe89349d006b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_6031063fcc925.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/c7f8c4fa-e824-40ad-82bf-55da5a6ef875/fugekibudixitur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eb6aab2-0392-41ba-b7c9-13bbc9054461/45433777740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/670a9104-c0c8-40bf-b92f-1c0f54ae927a/dell_poweredge_r710_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b396437-9bde-470c-be1f-57d75d9c6c0e/the_art_of_the_comeback_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5212a02d-60b9-46b5-9b67-8db63ff0baa3/rurifogawilofuveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e42b8abd-a645-4c58-8385-48a8b4e69984/19621272936.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_off0000dab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB5 5576 bytes
SHA-256: bb2b019c4c524a2b7b7be707b8bbc8209d305d236d97dd4c36eae3fdc34d683e
font_01_sfnt_off0000eda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA4 11244 bytes
SHA-256: 2d78568800aa13c6ec4ed75107fde7828aec3ceca99f122078b4270cea87018d

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