Malicious PDF — malware analysis report

Static analysis result for SHA-256 e394a3140f751e66…

MALICIOUS

PDF

85.7 KB Created: 2021-07-12 20:36:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 756b198d15dda28ee23db50b5f23989d SHA-1: 329ed83733b58dec84d798a24ac3b8d2228ee378 SHA-256: e394a3140f751e66cfeb96e328abd5acc7d4d3f44b86b4552aa51bc73adecaf1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample 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 malicious content or phishing 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 external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8790

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/razvivatel/yapz/~3/v-xubMviL4Y/square?utm_term=the+godless+series
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e91e032210ba6bce120874/1625890307716/sotutujaxuzered.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7a4fa48fdc259403dcede/1625793786526/zabudixokaxupexipotin.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7b2b40121f5668991163/1626110763614/cold_in_english.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c8b04c181567023cab22/1625868464577/pazeki.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e78950d56f0f36126c5211/1625786704328/world_of_tanks_blitz_unlimited_gold.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7d198b977dd1475c9b7e4/1625805208974/ketepozegevasifo.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8649408bb7618f358ede7/1625842836334/kidelakopi.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_off0000ef81.bin
0582e9843f6624c9274317b67544cbfe5edfc716e816fb3a4dff7ddede8cae17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF81 10128 bytes
font_01_sfnt_off000105f7.bin
80298e88249a61f65df9e0b705e105140482caff396191dd444ca4b60a3e03c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105F7 17232 bytes
font_02_sfnt_off00013318.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13318 16792 bytes

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