Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f393ac5141a96ed…

MALICIOUS

PDF

91.6 KB Created: 2021-07-22 02:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a442d098f89fd8af98b241a59ffc28e3 SHA-1: 3e4257360a790a5e16a1b6d0b804296acf82ba3b SHA-256: 2f393ac5141a96ed640acf02bcfe2525d82c941744f59b560c360d699aa7a2fd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that points to a Google feed proxy, which in turn redirects to a Squarespace hosted PDF. While the final destination URL is marked as benign, the presence of the initial malicious URL and the overall detection suggest a phishing attempt. No scripts were extracted, limiting the analysis of the exact payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/razvivatel/yapz/~3/um1bUVUAM38/square?utm_term=the+beginning+and+the+end+by+ibn+kathir+pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edc736a4137771baff5733/1626195766565/64707503128.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e86887b2ee9c5bb7da8a4f/1625843847840/how_do_you_unblock_a_number_on_android.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8c0d4810a01599a42c414/1625866452768/print_and_go.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f327a94b68c137e69969d0/1626548137278/zijurolinare.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f8900622b0bf63072a46be/1626902534970/xogurilufalovobudax.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed8d10a17c7f1bf0055a30/1626180880810/xulirak.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f240e0860d895b481ca5be/1626489056220/13092670076.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e914b0025aa46e30d245a6/1625887920837/52691046263.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f26f03c4d0d61e672eccac/1626500867396/i_am_ten_years_old_in_french.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f7af68bad1557b415e9a80/1626845032238/24680668265.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f729861d4629011576c80b/1626810758081/banekigixobonerokiwodizu.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9491ef107ff2467ea2ec0/1625901342903/mixagak.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f07465cf32816664370967/1626371174231/the_gift_2015_123movies.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e959dc83ae0c49023abd32/1625905628235/myrtle_beach_sheriffs_department.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edbe1ae11d817478ce9357/1626193434633/stella_and_me.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f2887ae615ea111e617000/1626507387056/49782107815.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f5ab52940f8d032a894741/1626712914541/xugikaxoletovezozimef.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f530f5ce637c25834f9b62/1626681589160/86450034204.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee8ba5aa539923b58abd23/1626246054138/rujikototud.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0d8439014c44c528b8f1d/1626396740205/forensic_medicine_toxicology.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_off0000eb70.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB70 16792 bytes
font_01_sfnt_off00010381.bin
953a9a64ff9a5d685cbd8594776529411dd19af94483305bb9be61fe80f7906c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10381 16676 bytes
font_02_sfnt_off00011af3.bin
690e6269a4ae3f5fb2e700025e4eecbff3626a3b3ba9a775608f69f88b51b3a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF3 10752 bytes
font_03_sfnt_off00013339.bin
4f4b805f5d702f2d23b69e6b59f175a7ab6206a4e1996bce5befc717f5997bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13339 16972 bytes

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