Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ce484b20dd89b1…

MALICIOUS

PDF

90.4 KB Created: 2021-07-13 21:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aaa7e2953f40d510c5d0a14063f29561 SHA-1: 53654821ad54849d90abb389c32c5774a3dcd388 SHA-256: c2ce484b20dd89b10b85fdf9a3d26d5ba051c14f69cfe5b60e5f961d89dbf024
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that likely lead to phishing or malware distribution sites. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit vulnerabilities or trick users into visiting malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6225

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/RVI1sXQGPkU/square?utm_term=anecdotal+evidence+is
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed3e62eaa19e084bbe7263/1626160738444/best_console_keyboard_and_mouse_settings.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e81a0c687a3d659a4e9e98/1625823756484/easy_henna_tattoos_for_beginners.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94e3d2dabf2723555c839/1625902653141/400m_is_how_many_miles.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec86cb7e5cd11affcd87d9/1626113739604/fallout_76_classical_radio_playlist.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e91348f107ff2467e87a27/1625887560493/introduction_to_sociology_short_answer_questions.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c2.bin
52e3ffbc44cbbe07af45232873139adc964cfaebc2e97945dec782b8b245c640		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C2 17500 bytes
font_01_sfnt_off0001155a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1155A 16792 bytes
font_02_sfnt_off00012d6b.bin
0e0a51c4e8d37788f4dcd9472fc5f8ec182b4f7d3091b5812c8275266fb0dc67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6B 16964 bytes
font_03_sfnt_off00014627.bin
252902ba4609a51421dd18941fac86f40745135220ec70623e3f849035d05d53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14627 10312 bytes

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