Malicious PDF — malware analysis report

Static analysis result for SHA-256 0139898d3b921371…

MALICIOUS

PDF

99.5 KB Created: 2021-06-27 03:04:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 746eb290d42f1570dcd31324fd45f981 SHA-1: 0dc157481638de10711bf78cdb4c0bc10a36bddb SHA-256: 0139898d3b9213718b17f2c3a5d10f5b010c1c479013951d74ef89f4021dc20f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple embedded URLs, many of which are hosted on compromised websites, suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URLs are strong indicators of a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9704

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://com123.vn/uploads/file/75862540129.pdf
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/f7c4e27f5b73b9fccf24c96efe3bf1ca/36749637923.pdf
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079753dc3914---28487309205.pdf
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/5neeltp3itnnbesva38o7lkt1d/90445200303.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087db5f8fcbe---fujat.pdf
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/6b2a10c0202b734328d0b117fb3bca79/15253570532.pdf
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f263c6d62---26140265593.pdf
    • http://anhuifan.com/upload_fck/file/2021-4-29/20210429142932579642.pdf
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/49313ba419abcaf36544661d15b4de1c/56741151315.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/54c5dfb5ec296acedde843a43011ea9d/3424852389.pdf
    • https://anmoul.com/userfiles/file/72013872559.pdf
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/6811f2e3460453784ab3d90061f03052/vedad.pdf
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/4a4bbc570b0d74de34689fcd3eb5644a/bujuxasoxikebiwarosizobef.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cce06857af9---mixeku.pdf
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ac70017bbdc---4022425659.pdf
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1607f57245bd32---gibesexigufixojupewew.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a72e14baa12---16407487767.pdf
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608780bc36845---32649873415.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/b0d95dab23278df746a10ca90039f1f3/59397063270.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a06afb86cf4---79705382464.pdf
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/htoqc4e67d4pcitjvtsfh0f0ga/50373271028.pdf
    • http://albino-pitti.com/pub_img/file/padafuzojut.pdf
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/5741f95a1e3878b5380a7ff38bda5da7/14611804092.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16074256057077---rirewinaj.pdf
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/22tjt46c9uock5sptuf1o278jr/65697096094.pdf
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/iqdmnu5s3s4rs36o885vhh72t2/javolaneliwutojufozowixiw.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=fieldgate+street+great+synagogue
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a85.bin
2aea07d6a38e9982bab96d8a9eefb25c9b007abd95a538f6a7e205706b2e6151
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A85 17512 bytes
font_01_sfnt_off0001388a.bin
636d8524ba03c810c74e3a4124d0fdea6c0e0b92fde732de2cb1766438bc7b32
pdf-font-stream PDF embedded font (sfnt) at offset 0x1388A 10616 bytes
font_02_sfnt_off000150b3.bin
df322e38027b3905421c43299e14200e7ec11e82bffae661da659dc70dcee38f
pdf-font-stream PDF embedded font (sfnt) at offset 0x150B3 16640 bytes
font_03_sfnt_off0001681c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1681C 16792 bytes