Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b5a34363b385ed…

MALICIOUS

PDF

94.6 KB Created: 2021-02-27 20:23:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4e6decf65ddc5082f9db7eaead724033 SHA-1: 7b415c65347fa2fa752eac49d1163e23554d1db5 SHA-256: 97b5a34363b385ed5ddb57478018b3f65e80b93b3bbe356f991943d1fc4f7bce
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 by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that directs users to a suspicious domain, likely to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, appears to be a lure related to a search query.

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://fokemale.ru/award?keyword=how+does+katniss+look+in+the+book PDF link annotation
    • http://vulefuxudonad.22web.org/xasisuxirolew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467300/normal_6003b87a98f2c.pdfIn PDF document text
    • https://fumadutukit.weebly.com/uploads/1/3/1/4/131437402/mekuxikidetitogowi.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/18880ce1d3e2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5ff5e55d975fb.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/biiMihc/vosubaba.pdfIn PDF document text
    • https://cdn.sqhk.co/mumaxeje/69Fmwjb/texas_a_m_corpus_christi_softball_camp.pdfIn PDF document text
    • https://cdn.sqhk.co/dapumexader/fijcgdt/45133507908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464297/normal_5fdd657b726df.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/5d4c0e13213372.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/OxijjgO/trials_frontier_cheats.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380223/normal_60000732d03ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472491/normal_602f7df3c67c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dukojalili.rf.gd/cannon_bed_sheets_review.pdfIn PDF document text
    • http://zuwogupewukefet.epizy.com/60926137365.pdfIn PDF document text
    • http://wozabuposeg.epizy.com/robert_greene_mastery_audiobook_full.pdfIn PDF document text
    • http://riwigov.rf.gd/34254962004.pdfIn PDF document text
    • http://wotujemun.rf.gd/66688441994.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_off000137f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137F5 5076 bytes
SHA-256: d7ebc4896765659b30a6a4eb680cd3dc850737bb7602d1311d79e612f342dea2
font_01_sfnt_off00014943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14943 10512 bytes
SHA-256: 06c57da153b95fe54042fffa6a7497dc4ab3ddb4bdc338a6d4899b76e1e59d9a

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