Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e69bafacfcae695…

MALICIOUS

PDF

83.5 KB Created: 2021-06-27 22:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 94bfa44a2b5e5386994e162bdaa6b705 SHA-1: 733d4a924d6e9573f326bb3a26420d78d25d91dd SHA-256: 6e69bafacfcae695e7d9fc250c1e4b15ef61ed76f2690a1b3210f048f7d25992
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious URLs, which are designed to host further malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/tr3ds2b1qi3m9kg4cub4bj2ceq/29352190497.pdf
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a251bb604da---24936363855.pdf
    • http://lexus-custom.com/js/upload/files/xumumimami.pdf
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/69519256156.pdf
    • http://alituncer.com/userfiles/file/36391181464.pdf
    • https://legyenegyjonapod.hu/userfiles/files/83663959366.pdf
    • http://china-zub.ru/userfiles/file/49314129733.pdf
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/3f5e4015729207b52ec379426771402d/24402336290.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/na2ces373hcdsklcdsgqmue5bd/tujokoxovulegebomudeki.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083f1d271017---giwikidekipin.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a5797f261e9---kezubafagurax.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606e36cb72517---39975731030.pdf
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16081772d2a9cd---93189077097.pdf
    • http://eia-edu.com/userfiles/file/wamawijiginitu.pdf
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/74ib10u8cb5knteo27til7cqad/22519823049.pdf
    • http://alrabbancapital.com/file/files/94160836379.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16079d9aa95919---56625037849.pdf
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/e0eafe07a698ca56de9175d88cc20c87/69826734407.pdf
    • http://tangiahoang.com/skinkorea/Images_upload/files/53734304317.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e67d6e1835---zaxibitufinizanonax.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff50c72fcc---34761766717.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ed5576df3---61967959340.pdf
    • http://mmbc.cz/_data/user_files/file/94418463126.pdf
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4f59a9465---89061764079.pdf
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/laxibadogenetusavog.pdf
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c979f979684---matakelapinuzebusikajati.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=black+steel+pipe+for+chilled+water
    • 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_off0000e264.bin
7919f0e2a54119ef0b8b291ff01029d4160ec4992ab55159ae8b4ca678411ab0
pdf-font-stream PDF embedded font (sfnt) at offset 0xE264 10844 bytes
font_01_sfnt_off0000fbaa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAA 16792 bytes
font_02_sfnt_off000113bc.bin
3f692c82af54331eb643ccc8dbc4b0368746401e0793ced259fe63ff6b67cc4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x113BC 17076 bytes