Malicious PDF — malware analysis report

Static analysis result for SHA-256 9216484c43750ad4…

MALICIOUS

PDF

100.0 KB Created: 2021-07-15 18:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 81c30dd98a7ee49c0afe04cc7e4f1c48 SHA-1: 06f5f6ac7e2ad366f78436defeaaed9ba740308f SHA-256: 9216484c43750ad4ab443636a821cd7db217a3b373424b187b41f0e8950cace4
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. It contains an embedded URI that points to a URL, likely intended to redirect the user to a malicious site. While the document body is heavily obfuscated, the presence of the URI and the ClamAV detection strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2695

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/UQ8tT55rDuk/square?utm_term=second+form+of+strike PDF link annotation
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9738b3b63f0898f3b414/1626117944918/computer_science_book_for_class_12.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e916f7085b1c120f978ff4/1625888503643/99319517573.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed7cf402ab3a569c44deaa/1626176756763/dddr_pacemaker_meaning.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c69ba7bae82fe89680c0/1625867931926/100_most_deadly_things_on_the_planet.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e874bcb9ca6543b7ad7448/1625846972907/have_a_great_weekend_images_and_quotes.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC8 17548 bytes
SHA-256: 65e9450fb653cd729cc8d3afcbef71dfd70569286557f06e8700e9d887b7775c
font_01_sfnt_off000108c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000120d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120D9 10596 bytes
SHA-256: e60e2e08f4de4f0d871af2bf35b86c2a02bfee7a493e285717763ced8e81a7e6
font_03_sfnt_off00013902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13902 4436 bytes
SHA-256: 2107313475db76bbfde4416ac789c09cc38a3f7bd46e7817e322ac3fb5134496
font_04_sfnt_off00014996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14996 23712 bytes
SHA-256: e6c05284a0d14e1661ab4698f55266c47fe55befd062f0ebf27e3bfccd2439bb

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