Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4dbc9dce26b07a…

MALICIOUS

PDF

89.2 KB Created: 2021-06-26 02:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 622e7674b44cc560833bad5ca2d5f886 SHA-1: 63b00320964795b3f0aff73a3fcf2106fc9ac9bd SHA-256: 1f4dbc9dce26b07a7a054e3c9361156ac32539bcffcd8d8b25407cc0fa4fdba7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that likely lead to phishing sites, suggesting a spearphishing attachment attack pattern. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 http://ahlhy.com/uploads/file/292118473769.pdf
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855e68dd287---57892240505.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903e29de8fd---popideja.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/e4916b7325dae79b569ee9b66d16dd1a/dutitawuvirozanululak.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58ddc4fea6---ganebibawuja.pdf
    • http://co-wemart.com/careeruserfiles/file/91444866116.pdf
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1674a7286---pakariliri.pdf
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/3oqet01ahvlcmfe353e3faepcu/58486399615.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f602d9ba0e---winexuzudakimed.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0c73286e2---55596670258.pdf
    • http://ciaooo.ru/uploades/userfiles/file/9118797352.pdf
    • http://dabaizhongxue.com/upload_fck/file/2021-5-25/20210525071238448630.pdf
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5d8d5e206---lezejidumakek.pdf
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/a93cd577887e7aa9ccf40e0c3745702a/zirewej.pdf
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/2gmeehad7jo32lvrd5a9j37h8v/kosovifipugowobuduliba.pdf
    • https://mn-lawfirm.com/box/userfiles/file/dupakabofebidoboxiba.pdf
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1609465dedfc97---nejix.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb3bbb826b---52453406292.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/7db31b951b5d0270b285beb2598251c1/kadetebisawitojagebow.pdf
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/41850bd185c528ef271076a431a4df80/41159285824.pdf
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/f89f33b9790c291e7b6af87feb2f3e24/81052622987.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/2288121102.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=fluorosis+prevention+and+control
    • 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_off0000faac.bin
674539405f4592103799feb733db6ee6ad7d3a173cd01f02cceff7d616e325c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAC 17012 bytes
font_01_sfnt_off0001271f.bin
72855732fcce204db09275e7b279747ad271a2c8d45de386b2d444776d5b032b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1271F 10648 bytes
font_02_sfnt_off00013fa4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FA4 16792 bytes

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