Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbd17e9ff07bc83d…

MALICIOUS

PDF

75.7 KB Created: 2021-07-12 20:36:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f25ba579b8c9ad2d721bda27f7ac1c8a SHA-1: ca4c6d6090111c7bf68a90b4d23758234910ee7c SHA-256: bbd17e9ff07bc83d96236f6db7dee3e5d4c33bac1c2646cce6d97bb8dfd107fc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URLs suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/CHqDoFjlE84/square?utm_term=the+bible+project+reading+plan+2020
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e83d6348bd770cc467d7fa/1625832803234/woregerol.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7a88b8cbe518df56fbe5/1626110600523/tusazegabofadixa.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7ad77a1add4dee1ebc6a/1626110679420/i_will_be_there_the_jackson_5.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e45b566ded7d61a9b8f8/1625875547254/concept_in_swahili.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec793131b0b43e07e5b9e1/1626110257573/buzugorisej.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_off0000c711.bin
228fff66e577409f565c36a2f13ed864a7fc7e1cdde8cbd06cbc52b0bbfe71e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC711 11100 bytes
font_01_sfnt_off0000e06f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE06F 16792 bytes
font_02_sfnt_off0000f881.bin
32775c43fda96d61fcf758e9cb386f93d29e058bdd09f7c33c600b57b35d88ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF881 16284 bytes

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