Malicious PDF — malware analysis report

Static analysis result for SHA-256 038af4ae13d69555…

MALICIOUS

PDF

80.7 KB Created: 2021-07-15 21:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bb34ed87f71bf4234f87864854038fce SHA-1: c7f380d1847f7c896e919516b0e6f3a63131b634 SHA-256: 038af4ae13d69555dc02c36f88343d9f2f0aa0d915bc73395b189f4c2a16f2de
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious intent, likely related to social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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/sq/ugae/~3/CcIy6vlvkUk/square?utm_term=class+c+family+violence
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec76f220781e4bb11aa5c1/1626109682319/kewopakuzatufir.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed8d053b21860fe672d4f4/1626180869792/28320516225.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee2f16df274736e0aa922f/1626222358256/xibotusonar.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60efcb148fff8309feb78483/1626327828816/analytical_method_for_four_bar_mechanism.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edb307d2a6f635453f1d48/1626190599574/mosedejomariwixuweg.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8bcf03add050c1b4a817a/1625865456408/92475705657.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9063b8fb24157da6efeb3/1625884219556/60814572288.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee31a2796bb0196c60e6e8/1626223010340/meaning_of_the_word_repertoire.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee6384114e6b7b7de94ce9/1626235780617/43737984337.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee934c7d49fb55d62be752/1626248012211/30230558736.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_off0000daca.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 16792 bytes
font_01_sfnt_off0000f2e1.bin
0b6da43e4af61ff088a4b51f063912d6b1e347e2e9b2b6157bae8023906afbe1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E1 10508 bytes
font_02_sfnt_off00010ac7.bin
64852075f9057b537bc47b7748b312a58eeee2e9fa3a5ea99e52df04f298825b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC7 16840 bytes