Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38018a0f7f3e79b…

MALICIOUS

PDF

80.0 KB Created: 2021-07-13 14:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9770fd54470e3d787e392d3577c59ed4 SHA-1: ccc149b579908dee6bc2e66a81b05fa9ceebe437 SHA-256: e38018a0f7f3e79b788a4c15e10c93714b1f2d2459509b1d8960666821883a2b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that redirects to a suspicious domain, indicating a phishing attempt. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9031

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://smidgel.ru/square?utm_term=biggest+beehive+in+a+house
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e932ffb9b95949b65f5200/1625895679285/riwerezudurelurod.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e85f7e6eeeec45cce650a6/1625841534843/32839915746.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9457831aaf5e928bae60/1626117207671/vipawigija.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c6f5fe2317389cedd5f2/1625868021767/recycle_master_pro_apk.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec83f58bb04542cee49669/1626113013290/easy_mince_pies.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e84b083b27a31b5f33df51/1625836296613/words_of_affirmation_in_tagalog.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed4a1550bb312daecc8a60/1626163733280/15610143626.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5f2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F2 16792 bytes
font_01_sfnt_off0000ee04.bin
6b58e11b8e72522dbf7bdf5f167d2df87a2eb1591715b3f845ec6995295beccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 17552 bytes
font_02_sfnt_off00011bdd.bin
2eb9ebd58cdab2ba2b2b0b010c55eef8f7f6f7975e82653ca26db2955560ec2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDD 10600 bytes

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