Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdcb51f3b5d1145…

MALICIOUS

PDF

183.7 KB Created: 2021-07-12 19:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: fd7ec7686e54ae7e8d649a7edd6b90f7 SHA-1: 8c6123b32f918bcb2f1164738fea56fcaed5dbf5 SHA-256: dfdcb51f3b5d11456c00b3f5a5d6fb7c72d937f00b07a6211aadf6e480739c13
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. The document contains embedded URLs that, while currently marked as benign, are likely part of a phishing lure. The PDF structure and embedded objects suggest an attempt to deliver malicious content or redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3382

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/gPkW7oTCsL0/square?utm_term=emily+dickinson+all+poems+pdf PDF link annotation
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec705d2de9850677715d48/1626107997493/kuganiwugedoxufe.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8e3222210ba6bce0ec897/1625875234416/pokemon_sword_and_shield_how_to_evolve_eevee_into_sylveon.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7086ef188817f7df8470/1626108038946/chest_burning_while_eating.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c0ec596d362fd0fbae53/1625866476682/how_many_eggs_do_toads_lay.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27394 17512 bytes
SHA-256: 893f581c15d19137c0ad926da09a166d7c1fdd18c1abfc89e19a553a2b2ededd
font_01_sfnt_off0002a1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1B9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0002b9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D0 10772 bytes
SHA-256: 703a32feb7925fae980d5069641b1fc95ca49dcd1722b3c9d3759c4d548405dc

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