Malicious PDF — malware analysis report

Static analysis result for SHA-256 705d130308800426…

MALICIOUS

PDF

71.9 KB Created: 2021-07-13 02:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4b269b935014f23a7f23d7c1c09dcbb8 SHA-1: 4b2b03cbd56f5337ee78e1d96e699852eeb6b825 SHA-256: 705d13030880042609ae3d5e4250d54c2eb6d5e803e51f7cbff1547e43972402
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier also indicated maliciousness. An external URI was found embedded within the PDF's metadata, pointing to a suspicious URL. While the document body is unreadable, the presence of these indicators suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6583

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/k6oGaauGqGM/square?utm_term=carford+heating+and+plumbing
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec73dfdd2ac847ff7ced80/1626108895664/falorusafiwajibar.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7e00c8b0d544b6d7068c/1626111488594/find_product_by_sku.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec96fa5338e9546e48b443/1626117882828/the_standard_life_assurance_company.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_off0000bda1.bin
df46d4bfcb2e81e800cbe3923c3b5542a024f3827784d48f5b4a664c04a2cace		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA1 14712 bytes
font_01_sfnt_off0000e294.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE294 16792 bytes
font_02_sfnt_off0000faab.bin
db90c601a712796f69f4ea38319e12c20c562901adc8f9af2960d40b6cd4c1cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAB 11048 bytes

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