Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a02abb9ec76793…

MALICIOUS

PDF

95.6 KB Created: 2021-07-16 04:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b6703b5a8c7d6f522cd0d4ad6d3d08a6 SHA-1: c6ab7ec31e7747cf439205080ae6779a755cedf8 SHA-256: 80a02abb9ec76793fa13e215f2e3b2c823f8eefba8cf32f0910b6ccb1afb72e8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely phishing or malware distribution. The file's structure as a link farm on potentially disposable hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2938

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
  • 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
  • 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://pistant.ru/uplcv?utm_term=electronegativity+of+nonmetals PDF link annotation
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/bed6f32dcc0a674431df02747e566803/39162168990.pdfIn PDF document text
    • http://ponyomaru.com/files/files/sumutasalagazumurimosal.pdfIn PDF document text
    • http://cc-loges.com/uploads/file/femuzijidojokukela.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/41172021351.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608089c75a4bb---81675202091.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/f595242a3b4709344d978789d86a9dbb/rozefakekovipomolite.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bdeac18d53---84705086168.pdfIn PDF document text
    • https://vigiweb.cl/dinamicos/files/file/luzibewolikovu.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/45347994044.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084465b8f907---48849761023.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/uatg3lpq4bq8mssmkf4qlm39en/toxejokepevovigifud.pdfIn PDF document text
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/wujamutexokexabi.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d93fbf426b8---wotukikizidofijojewur.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608112fc70359---22498330196.pdfIn PDF document text
    • https://reniuved.it/file/xagiw.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/31377036574.pdfIn PDF document text
    • https://lapiadinafelice.it/file/wovapunuj.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/64210332462.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/zidusevupa.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16083b0f1be631---bovomik.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd2db8120c---96642841198.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/d7326bafb30b320ec2b819fa2eaf214c/83977181202.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/12947460889.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dac3e6ec747---givejetitesifitisebo.pdfIn PDF document text
    • http://weberstellen.ch/userfiles/file/mamagaxemeximimezuwuw.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF4 19592 bytes
SHA-256: 53d22be681b533f4bbb43d9d6bc24f283cdd03d3375ac619de1abccd718f3d5c
font_01_sfnt_off00015279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15279 10844 bytes
SHA-256: 127e9e7116c59c2d3036a81cd6d4587d4ab08d880e905bf06ad62d1d85d60605