Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11a1b4279439ec0…

MALICIOUS

PDF

95.7 KB Created: 2021-06-28 08:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 219dfc02a91b0072c9297bee82eb087c SHA-1: 6e9a98086212dff003706a152fdeaf5f80c70d10 SHA-256: a11a1b4279439ec06e19ff3d11696ea0feb0a83ccc78e9e7feb03a67e242c2d3
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. The embedded URLs, particularly those related to 'free Robux gift card codes', suggest a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate an attempt to redirect users to malicious content, likely a phishing page or a further payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ce30fba76f8---53940717627.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607fffd72d9d6---3375633697.pdf
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a83d868f09c---pemanarikapa.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160736be5e9d28---3594688130.pdf
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160851ed6c1bb0---lojefil.pdf
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/32468773905.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2334a2000---lamego.pdf
    • http://bike-aholic.com/UserFiles/file/68469548441.pdf
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dac3861878---xiwalugitabefovanexup.pdf
    • http://birzebbugastpetersfc.com/files/file/kebukoromudevigazeno.pdf
    • https://binarbaidrealestate.com/public_html/userfiles/file/57709069756.pdf
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090711c60b44---bepukemikafovozelesep.pdf
    • http://shipsupply.ru/userfiles/files/72332025689.pdf
    • http://becucci.it/userfiles/files/66089966226.pdf
    • http://atenngo.com/admin/sites/site/documents/katerinugegu.pdf
    • http://hengtaixin.com/HangShun/ckfinder/userfiles/files/27193466904.pdf
    • https://afra24.com/basefile/afra24/files/13377912736.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a887d315d4a---3526822168.pdf
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/f9c43f95982589f6fce8cdffd5854ce8/viriditu.pdf
    • http://murphysbeads.com/clients/54316/File/59065925588.pdf
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b0fd0e79b83---58826322512.pdf
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/728b0eaf878b25a92c4317543ddeb2f3/27893941685.pdf
    • http://kassa.pl/userfiles/file/85529814851.pdf
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/db14af6ca8c73aa707fd16d2bda971ed/munepeje.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=free+robux+gift+card+codes
    • 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_off00011133.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11133 16792 bytes
font_01_sfnt_off0001294a.bin
7087851828c027f95749af6836b5e0a6b8eecfcf871c87e5b7e0d1a547ff00f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1294A 10820 bytes
font_02_sfnt_off00014234.bin
ccf3a03f0a7c3e6c079e82991df73836f6b2396bd9cf5a8a290a83a0bc7b05ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14234 18180 bytes

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