Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccdc1dcd3d85c4ef…

MALICIOUS

PDF

84.3 KB Created: 2021-07-22 04:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: df21aa224ade416528d92a493f176eea SHA-1: 024d5285a1ce06dc1a2027228c3ebe71cf3894c7 SHA-256: ccdc1dcd3d85c4ef0bb6a20fcded2d80c7695a7e2e41c521c733a89933d603f7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests a potential phishing or payload delivery mechanism. The PDF_URI heuristic points to an external URI, which could be used to download further malicious content. No scripts were extracted from this sample, but the overall structure and detection indicate a threat.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/-7-cX3opz_8/square?utm_term=jake+of+all+trade
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f8baa2accc405b10be0218/1626913442178/online_biodata_format_for_marriage.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f84ecec2de402a3e518af5/1626885838955/7351236538.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca5005338e9546e4a4598/1626121472608/the_amazing_spiderman_2_game_android.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f259a4e13ee97666fe2308/1626495397059/belowobelolenef.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0a78dea7e6f41448945d9/1626384269355/durban_beef_curry_recipes.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f8b0be7f728b6ca9057f46/1626910910604/lerolobidurumofike.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0bf03c9cf4d400005ce79/1626390275689/20392394753.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f22fe00a88cb63e5bdfc4f/1626484704912/easy_hairstyles_for_toddlers_with_thin_hair.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f4505750974615f92bc983/1626624088008/pevuke.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f3eeb66c177f33d7a897f7/1626599094639/what_is_homogeneous_and_heterogeneous_mixture_with_example.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e767d8e055dd31fd06586e/1625778136508/st_cyril_and_methodius_church.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f252bb6167905317d07c2e/1626493627352/92112771543.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f385746f491d4a1ff404af/1626572148383/xunidopevubejelesafuxude.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4503ca8f65e35b6e2d60e/1626624060752/navabixaduzerezozipo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7db5745e16b3be7e9c8ce/1625807704223/80872087145.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f13be9f32be22f00778634/1626422249604/wodepikavisenujoran.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_off0000e856.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE856 16792 bytes
font_01_sfnt_off00010068.bin
e368b7b3da140e78eb8e149a26d752f75d7e54312bffbfb9a9fb90d49a2e9497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10068 16816 bytes
font_02_sfnt_off00012c34.bin
fd378bae2fa449c6dc9b6af3c2be78b99b1afb204c8b5a00c6668d5e03ff1ce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C34 10068 bytes

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