Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2282c5b62759e86…

MALICIOUS

PDF

80.4 KB Created: 2021-07-20 20:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 23daa51e255905276e04aab693e6e3be SHA-1: 0722f1afc227a338f0ed02f6feac4468c8658e99 SHA-256: d2282c5b62759e866a56744232a71738dfbc56bc7b5ce07b554b98d361d97b70
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The presence of an external URI suggests an attempt to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9511

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://allytemp.ru/square?utm_term=explain+the+demographic+transition+model
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e87f917bcd5c11e03ab8c9/1625849745732/soccer_fixed_matches.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f35d09e615ea111e6a7232/1626561801543/luxurious_first_class_airlines.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2562d26e2e727c257055b/1626494510186/52215173565.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed3ba84616123fc5f8d95a/1626160041014/kutigajurujifixizawexifa.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e965d1e6a58043b69387e6/1625908689130/gupidi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e768e6bd1231e604ea11/1625876328117/4_letter_words_with_world.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8ff95f8bf969071ece67/1626116090134/96207743878.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0431dc00d13116b482245/1626358557320/1960_romeo_and_juliet.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_off0000d76b.bin
df169b1b68559443a770b52ba318904b298b9db848a64e9212dc9783601eca97		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD76B 11044 bytes
font_01_sfnt_off0000f0b0.bin
ca1aaab12dfc9d24defad76413e509b72fbd4c06767962f3ebc98d71a301b23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B0 17120 bytes
font_02_sfnt_off00011d5e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5E 16792 bytes

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