Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5df4f0e1b4e4a8…

MALICIOUS

PDF

85.2 KB Created: 2021-09-02 12:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 147aed668961173713759c010f771060 SHA-1: 17c4af7d95bef5abd5fca7879c43e1389d3c71b0 SHA-256: ba5df4f0e1b4e4a8a3e6ad7ba3c490ab2d4b4c9356b3edd7f4e9f9ced107b788
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. While no scripts were explicitly extracted, the nature of the link farm suggests an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://meruzhankhachatryan.com/app/webroot/files/file/womanumonuxabutukivujapi.pdf In PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/1ca13127fb9e2410d03900d065d7430b/48621519031.pdfIn PDF document text
    • https://cyberbirddog.com/userfiles/files/49905036685.pdfIn PDF document text
    • https://keralahappyjourney.com/ckfinder/userfiles/files/jixovibole.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b99ff9e333---8770437968.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bg2til75jjeqdumj6s92m2ogm2/noledumanitelon.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb75fd9b1e7---xulemaxamazikiseme.pdfIn PDF document text
    • https://tenfci.org/userfiles/file/vezufudeladitusowalofe.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/siranebowivu.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/a73ccd3b2e6370323021ea44fcd6514f/lotasabogiwog.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/lofepipebozawisaxilowosu.pdfIn PDF document text
    • http://xn----8sbfhu6ab4bqv.xn--p1ai/userfiles/file/vapopotarofejulawumufu.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/40968271543.pdfIn PDF document text
    • https://whatshoulditcostme.com/userfiles/file/14663828838.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160ad810b81f94---dilamufofoni.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/55690977107.pdfIn PDF document text
    • http://fcraregistration.com/UploadedData/file/xiwokofowiz.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/a1e0ba1309383a761fe5f652aef4bd0c/46051513328.pdfIn PDF document text
    • http://eraldocomo.it/userfiles/files/36797265286.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/a4480af4b2af6061fd64f5f391532a5e/30842953875.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/rolukiko.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a358d59fd4b---24225294697.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/94609234699.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609677e404b54---fanojazizodusof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=cabela%27s+food+dehydrator+manualPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ffe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE2 17692 bytes
SHA-256: 85627c0efe003f4c566c81a07cf4e7cbad4e7275554eaa49fbcf38275e9b8902
font_02_sfnt_off00012d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D57 10944 bytes
SHA-256: e2ea9b328f6c30f13e4f98d9bfbdad633e45bec9f0686a25904d0f7161a1d61b

Open this report in the interactive analyzer, or submit your own file for analysis.