Malicious PDF — malware analysis report

Static analysis result for SHA-256 5262e2810be57903…

MALICIOUS

PDF

68.6 KB Created: 2020-12-18 20:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 65e6359edecdacbe020d5db9769f4659 SHA-1: 22df56297c93f4eb8b2273f1e6528cc32dfecbda SHA-256: 5262e2810be5790322246b68ecf52367cbfc2a9f8e723cbdf5d2fb5b4917f872
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to song lyrics, suggesting a social engineering tactic to trick users into visiting the malicious link.

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://traffine.ru/123?utm_term=the+fresh+prince+of+bel+air+theme+song+lyrics+short PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487007/normal_5fa905cb964b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5f8c420882e22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427284/normal_5fbd0a4d970e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455396/normal_5fd144fbdba5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473971/normal_5fa5c4d2d069a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5fc6ff4a8a377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_5fc31d86aea3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f87024a08c95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375339/normal_5fa9338a5f8c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gifiz/nuxixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9efbcb5a-e162-43cc-b737-2a21977eabb8/lazesoft_recovery_suite.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/22688922797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4526beab-c38b-4439-885a-6beb51d62dac/windows_update_error_code_9c59.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B6 5620 bytes
SHA-256: 53501cd1abcf2c06ddd06ad384cade9327d569034a032f3a08093a50dd7835bc
font_01_sfnt_off0000d3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B1 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000df14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF14 10632 bytes
SHA-256: 324a71c676bc8b19725621f80737d93d63f3cc2874a741dec5a6c1c3125e768b

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