Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd8201e3864b715…

MALICIOUS

PDF

80.7 KB Created: 2021-07-15 17:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6ad4efabfe4afb244fd426db16716842 SHA-1: b0ab3511aa6dc27f13923c1633b0011e961e7e79 SHA-256: ddd8201e3864b71503fc005fef428a8392d39355805a9d65bd7dc2a54b6da2a0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing an embedded URL that, when clicked, leads to a download. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL suggests a lure to download a payload, aligning with spearphishing tactics.

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/~3/1LSSs5qy-i4/square?utm_term=advance+server+download+free+fire
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60efdbf08fff8309feb82fbc/1626332144415/50194905152.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecd75d37bee829a2819e76/1626134365353/90280180362.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edd983d6548a387fd28524/1626200451605/tufuwoxosewijiw.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8f8490a3fc49531a43ca/1626115972503/lanixipapoxogizexiteki.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee3caef6c772366d2e11eb/1626225838518/the_history_and_geography_of_human_genes.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecb518a60fc80735a0a888/1626125592816/the_mean_radius_of_the_earth_is_approximately.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee3ae2e03b615e098dfa8b/1626225378355/sexiz.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f021800511021e70b6c722/1626349952850/kuwirozejodex.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8657a3e9df788e6dab18/1626113624082/28055014038.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8cfc340fa0f2168471af4/1625870275983/unscramble_word_puzzles_printable.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_off0000daf5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF5 16792 bytes
font_01_sfnt_off0000f30c.bin
2cdc1296127bcc13d7dc854aa4f737cedf14ecee81c5e28da615739fa5381008
pdf-font-stream PDF embedded font (sfnt) at offset 0xF30C 10504 bytes
font_02_sfnt_off00010b1d.bin
95b7a1bfb954e4e87b1504fba47ca47f31557a3139717dfd121d33ed5b5326cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1D 16704 bytes