Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e296a9ae978223c…

MALICIOUS

PDF

87.1 KB Created: 2021-07-12 23:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e62b424cfd45009eb2f27f6ba8083b37 SHA-1: 8dfbc93e3a5ecaede5d978b611a7b307b9ca27ed SHA-256: 7e296a9ae978223cb2142771445d772d1a6de2382b679691696b3f77aff019e8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which could be used to facilitate these malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8239

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/WVKuihPcy9U/square?utm_term=harold%27s+chicken+75th+and+king+drive
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e948196e267257943c04eb/1625901082086/bemigut.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9528bf107ff2467ea7628/1625903756100/ditupimijogaxatevugonajeb.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e92782787dde1a90ae31d6/1625892738604/47175338913.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9160437da2614570db85d/1625888260763/17983449926.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82fc6bab06216133bcd53/1625829318213/hybridisation_of_n_in_nh3_is.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec92dde07849485499b9c5/1626116829912/lejosajexet.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_off0000efb4.bin
93bd7c4a640885a66d60180e1a13212448646396e0183e3050e88fd4af4143e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 17872 bytes
font_01_sfnt_off00011ec5.bin
bb12dee1ecfe24b5a4fa81dfb11069e718c34a95a8a3cbe1354321cdb8640fd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC5 11016 bytes
font_02_sfnt_off0001383b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1383B 16792 bytes

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