Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2293982bee33d9…

MALICIOUS

PDF

75.7 KB Created: 2021-07-14 01:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d95befcebf43d39d9f7bb4e4e95416eb SHA-1: 09172b1ea2728b7b39423c603fbe03bd3d0dd35a SHA-256: 0e2293982bee33d9e0f12091e448e1a3e57decd5233f50bbd040e761dcc6d331
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. The presence of an external URI and urgency-related language suggests a lure to trick the user into clicking a link. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7746

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/~3/4Ji06Fp1PxY/square?utm_term=medical+collection+letter+templates+free
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8ef3e0c99b3eb2d374bf/1626115827217/analytic_meaning_in_telugu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8d6cd598de22e33d2b2f7/1625872077340/wisdom_tooth_pain_treatment.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8380ad4a1a22a3e757b7/1626112896723/download_minecraft_java_edition_for_android_for_free.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed9a201374dd6a9a6335f5/1626184224332/81988004427.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_off0000c7a2.bin
f518bea19f0785921906662fbc0409595991d64eb498d15ebcc9cf493ca8825f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A2 16464 bytes
font_01_sfnt_off0000f255.bin
d4d82c22061cdc388187c2908768dccb6d8c2769197229f926fc1ca3c8455000		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF255 10772 bytes
font_02_sfnt_off00010b10.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B10 16792 bytes

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