Malicious PDF — malware analysis report

Static analysis result for SHA-256 84244286bbab19dc…

MALICIOUS

PDF

78.6 KB Created: 2021-07-15 13:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ec9462fd4fe5e78792c5192192783254 SHA-1: ae7ed9df63fb6915c8b5ba8d75f006d0513f64cd SHA-256: 84244286bbab19dcc49ce2ab68a2072ed2120f32a540b4e03ad524a9c94730be
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests a phishing or credential harvesting attempt, or a lure to download further malicious content. No scripts were extracted from this sample, limiting the analysis of its specific execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6277

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/iXsW93xxTQA/square?utm_term=pebbles+and+babyface
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9013e3b7e7c63344edd13/1625882943103/1877158439.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e81e0a5c13cc4feded6142/1625824778576/uc_browser_fast_download_apk.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eddf75ad58ca03d226fa54/1626201973857/gomilunotabirezexo.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e92b152f3c4128e18aa785/1625893653744/neferurinabomapikiza.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ede851e11d817478d30bb9/1626204241562/20368425437.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec791ec217102653d51204/1626110238476/9510440833.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_off0000c14a.bin
27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC14A 16160 bytes
font_01_sfnt_off0000d6bf.bin
24d64bb255c0f4c0f9bab118bd41631e586788dfa6801d9a1e3828b0c730f787		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BF 15532 bytes
font_02_sfnt_off0000feee.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEE 16792 bytes
font_03_sfnt_off00011705.bin
c1365c13a9f484355c5ef911bbf5c66a54bc8680b8ee4184d62daf5a134de16c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11705 10312 bytes

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