Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb65dfb8b2d9c43…

MALICIOUS

PDF

83.4 KB Created: 2021-07-21 19:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1e31e4e861d97a3dd5085c7410cb2a07 SHA-1: 3e244e4776ee8bcbeb2831ae5bad0d656cf6e989 SHA-256: dbb65dfb8b2d9c43869e7275e5794cbeffe56256db5d02c21f55244e8b65e647
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 embedded URLs, though many are marked benign, suggest an attempt to redirect the user to external content. The PDF structure and heuristics indicate it is designed to exploit vulnerabilities or trick users into downloading further malicious content, likely through a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/kVSxLQpkboc/square?utm_term=introduction+to+metallurgy+pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e87526c2683467d4f27be5/1625847079064/xuzebakutuvawotutenag.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4125929712869f06df1f5/1626608217140/simple_drawing_human_body.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2299c1db272198f8abc16/1626483100736/51349538454.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8ad4760c9e2bcf43bb67/1626114772515/73547568245.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f64f0e2fd42108f73fc83f/1626754830155/bavugalereganadimotilot.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8cc41f311dc752b0ad832/1625869377316/56317881628.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7f425f604029b9910719/1626111810771/25675952738.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f716a8bb22c77f538a8e26/1626805929075/the_line_up.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f7d060e97713016fa15498/1626853472722/12977158110.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7fa872e2584f2462e7b5/1626111912263/66228642809.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f8296cd2f48623f18bfd3a/1626876269288/32548915566.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f69209b2b0835cff9bc768/1626771978103/simplifying_radicals_examples.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ede8fb6d720f75fb61ba23/1626204411932/93671831856.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f798c71ea6a807ba80b9ea/1626839239285/pave_meaning_in_telugu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2cc0629712869f0601820/1626524678896/dorper_lambs_for_sale.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec833a59713006cbe1682a/1626112827052/65058027219.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4b8a6bf9212646c4aeee3/1626650790764/sowosokuzuwanatosipup.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7eb69adf2c26882014ab9/1625811818042/what_does_rtx_stand_for.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f08939437a710f2e296173/1626376505999/music_for_sports_day.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f51b16a3156f43f347a244/1626675990729/how_to_unlock_a_disabled_iphone_8_plus_without_itunes.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1a7c4adfb1a37a8b984ce/1626449860130/gonevovepufuxakesi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9265337cb9044756027fc/1625892435889/34337884765.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f23f2bd52b82025f9eafd6/1626488620006/filitavopu.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f27b21e13ee97666ff555e/1626503969757/marble_quarries_in_the_world.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_off0000e4dd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DD 16792 bytes
font_01_sfnt_off0000fcef.bin
99f579fdd32affb64955d6d03f0ca0c05a0b90837e95eeac5cbfa9131dd28fe1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEF 16276 bytes
font_02_sfnt_off00012719.bin
3008c3783e5e095643028603545a27c779f6c89cfd6fd9b076e65fa87e721044
pdf-font-stream PDF embedded font (sfnt) at offset 0x12719 10960 bytes