Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa2e777690f2e907…

MALICIOUS

PDF

125.6 KB Created: 2021-07-22 04:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b0fb32b12dcd7461c59a3b6393f9556e SHA-1: 5504bccfd0d3da7034205a804341380d1889f117 SHA-256: fa2e777690f2e907f470cbef43dc5cbeb98f3d7f969f75e3d471d718205030d8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified by both heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan. The PDF structure itself appears to be malformed, with duplicate object bodies, which is a common tactic in obfuscating malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://laborke.ru/square?utm_term=meaning+of+psychopathy
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f8bb6faccc405b10be0fa6/1626913647794/bantry_to_cobh.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f75ae1b9430e0612fc7c9c/1626823393512/wifuzunutik.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f7a6ae25f0714c528ac912/1626842798959/pdf_competition_books.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee3422c27d1e40a5499636/1626223650706/37956064330.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f6f0b4acdfad4da76cbe9b/1626796213286/jonejokopewu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f3e7b81ad9bf1c32b9e13b/1626597304236/5197483511.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f680c5357ac316222e91b6/1626767557674/what_is_point_line_line_segment_and_ray.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f6b5a1c7b6e30322f4bde4/1626781090009/25055072243.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0b2b72c92ee1dddd6dc71/1626387128134/nonsectarian_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8e5d258c6623f037eeecc/1625875922265/most_abundant_gas_in_the_universe.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8615a1f8f93f64ac0c26/1626113557114/gas_in_plural.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f85a340d68c804f576da62/1626888756672/core_java_interview_questions_and_answers_download.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e880a8dbc00a3535ad647a/1625850024291/cold_beet_salad_with_vinegar.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0b0b0ace7cf6ecae3ab6a/1626386608763/sulazanaziwotuge.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e95e17b630645a0ef92470/1625906711794/2004_bmw_owners_manual.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4b71954c26a0cc30b599b/1626650393434/fupitumelu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed8fbe02ab3a569c4621db/1626181566546/mipikikodod.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e908d8854c1d3b3486148e/1625884888441/blue_and_purple_highlights_in_brown_hair.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e774a88b5cb6198a7b0a40/1625781416567/give_as_a_clean_hands_lyrics.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7f7f21873c46ac93ab87e/1625815026592/1995_mustang_for_sale.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_off000188bc.bin
6e718e07c6d96e930bb259854865115e077eea3d43293b2ea35f0b75b29d9aec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x188BC 18428 bytes
font_01_sfnt_off0001b826.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B826 16792 bytes
font_02_sfnt_off0001d03d.bin
34fe6496d416c8b5d581d0c29f77f1a8a56eba60728b4342953d41d2ecd9da43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D03D 10720 bytes

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