Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83dd9f3ad90a3fd…

MALICIOUS

PDF

84.7 KB Created: 2021-07-13 20:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f0aa725f852c23eaa4dd7a47acc5e0f0 SHA-1: 638bf09b4bc21eff03bc67118c9d9275eef9ce50 SHA-256: e83dd9f3ad90a3fdda91fa6d603624f54629e149aea2a78339df425166cd10c2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URL that, while currently flagged as benign, is a common indicator of phishing or malware distribution schemes. The PDF structure itself shows signs of manipulation, with duplicate object bodies, suggesting an attempt to evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7022

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/razvivatel/yapz/~3/1LSSs5qy-i4/square?utm_term=our+network+has+detected+unusual+traffic
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed9a96b564270cd6e8e7ae/1626184342352/diwaw.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7b615d0799e4214be96dc/1625798165623/34409735585.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7aadc23621b4743e17158/1625795292747/the_blind_owl_book.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7b8bfe8ef4d41b4f8f4b2/1625798847298/central_government_rule_book_swamy.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ed2af23489b768f16deb12/1626155762927/code_word_for_the_letter_u.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82af9b977dd1475cd46a1/1625828089155/harvest_time_in_the_bible.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e864230fea934c8596b20a/1625842723811/50528495753.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_off0000d1a1.bin
ffcf87d689f3fcd6de6bbbb4fb592180e12bfd8c62111928b675d752d6c7e3f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A1 16672 bytes
font_01_sfnt_off0000fcd9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD9 16792 bytes
font_02_sfnt_off000114f0.bin
4a32f8e1b37d586826c3dc156f8b8d55e99afd492820ba1f8b99b72b179ca5f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114F0 10876 bytes
font_03_sfnt_off00012e19.bin
e18d6dc742fe41b6470c83276a17d8ab53ec178fdfea159b60d283ca24d0ec59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E19 16424 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.