Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f49a8c23ccce71…

MALICIOUS

PDF

88.3 KB Created: 2020-12-01 07:35:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 25e7b5b7e720cab92ae2b43097edfc5c SHA-1: dc6b4a20a661d85605e0dc89f4623d259c83fa84 SHA-256: 95f49a8c23ccce71b2415dcf4e4145c912d0eba9e0c1bc9525dd303d08ffb73a
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://trafffi.ru/strik?utm_term=to+kill+a+mockingbird+trial+quotes+with+page+numbers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5fc327a14ec51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5faa48aaa1bf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391624/normal_5f958592edc77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_5fa46cdce52ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5fa0a42fbe9cb.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://static1.squarespace.com/static/5fc0e88b8139af0376454bd0/t/5fc439053c6ccf69f3e4ce52/1606695174743/31658602564.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0028ac14dfd36feec75cc/t/5fc5785b9ee0f32b870d764d/1606776924445/happy_birthday_anime_dancing_gif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b82e11f6a419848b6c75/t/5fc42a06a97599144e7bbee2/1606691335149/97311981572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e052142-288b-48d5-baee-d8a6b75d308a/33341993633.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/teminitaginuwepev.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/sukaduvomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9239218-7045-4540-b5dd-17ef00c3e956/46780553084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f18d1a-77eb-44d7-afbe-c555370985cd/understanding_your_local_union_bylaws_quizlet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd04dac7afe470b5575abc/1606223070170/66041829500.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/portage_guide_to_early_education_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff313f06-3e9b-4550-adad-5ac35962ed49/getilululuviwex.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_off00010f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F02 5740 bytes
SHA-256: a8dbc9a0eb547dd4727ad51c357a5bcc3e7876a00150e43600d25f581e4cc2bc
font_01_sfnt_off00012255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12255 10420 bytes
SHA-256: 61513a73bbaf63da403d0cd40c7dbaa58741de0152affd5794ee0a4c52aec33e
font_02_sfnt_off00014531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14531 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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