Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1fc05a0b7197dc…

MALICIOUS

PDF

80.2 KB Created: 2021-07-18 19:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fd09c8b4a589cc1ad6e0bee2f937a2d2 SHA-1: 20bfb3700acbbd626fd926359deff624aa63b005 SHA-256: 7e1fc05a0b7197dc9b65c01d386a081af66ebec7c96aecf9b7df580a4e94a4b9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV detection and ML classifier strongly indicate this PDF is malicious. While no document body text was readable, the presence of embedded URLs suggests a phishing or redirection attempt. The file's structure and embedded content are consistent with a malicious PDF designed to exploit vulnerabilities or trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8365

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/rCno-htTzZk/square?utm_term=another+word+for+or
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee215b5f7927514e3b204e/1626218843589/12546472629.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8eeeb0cbdad4d3503b73d/1625878252090/passive_transport_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f00792874a183f1c40d858/1626343314418/singing_and_the_actor_gillyanne_kayes.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7fe125eabb22f35dc1263/1625816594331/5726997193.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1dbdf2fa9935a47a44e8f/1626463199449/fort_worth_fudge_and_toffee.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_off0000d9cc.bin
7ab051d54f127c86433f7fca4fc49a3f9ba8f508b83da9b3876e6d4a7daa58c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CC 16808 bytes
font_01_sfnt_off0001052a.bin
6bb61154a16ce4cdce705dced08d0ae214e177f0a25cfeef04b13ede89fd7b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1052A 10052 bytes
font_02_sfnt_off00011b88.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B88 16792 bytes

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