Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d61ef5611b4c36…

MALICIOUS

PDF

74.6 KB Created: 2021-07-16 05:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e55765226fb88efd1d9b2aa8d82b1227 SHA-1: d647f173c591f81e51a3d7fcc9871fefc378a189 SHA-256: e5d61ef5611b4c364f65c8547603629475808f5a8855011df72804a4fadb5c6a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URI pointing to a suspicious URL, which is a common tactic for phishing or distributing further malware. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML detection suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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://feedproxy.google.com/~r/sq/ugae/~3/EjZ5HCEZs_A/square?utm_term=churches+to+baptize+near+me
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9118a025aa46e30d22829/1625887114523/sosix.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee4075db6052518ec6bd83/1626226805952/88151344861.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee88f68e3fff2bd3c46aaa/1626245366639/lujirerovizememabotax.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8b437a2789679783bcdca/1625863223975/how_to_connect_to_internet_on_pc_without_ethernet.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8f28719a9f87deb70d068/1625879175468/13182367719.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_off0000c06a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC06A 16792 bytes
font_01_sfnt_off0000d881.bin
af48e5f742ddb8442b1b26f639fa32f76898c9db947bb49a980ba31eb5c327ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD881 10924 bytes
font_02_sfnt_off0000f17f.bin
fef349d85ec820437cc0b58c2cd432617d55083c74bbfd3a70edcc9b877cd778		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF17F 17332 bytes

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