Malicious PDF — malware analysis report

Static analysis result for SHA-256 e969b1e79a30769d…

MALICIOUS

PDF

100.1 KB Created: 2021-06-19 11:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c13201624ac9a24d5ea2241d413065de SHA-1: 0cb4db1d2ee586895ff7309493d0e64cb7fa28d9 SHA-256: e969b1e79a30769d0603c5a42ecdd3188148cdc8f3d4ca8bb7ab32d1d2edb1ce
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to popular search terms, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 https://crysiq.ru/uplcv?utm_term=hanuman+chalisa+amitabh+bachchan+download+songs+pk PDF link annotation
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/360d81bfd0a758ade6004b4797d81ed6/wobulodelokazid.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/42irhfgipcccj2hg0f1qqsq3f7/nitigef.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca35ebbb78---nibikulumurumazo.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/gozoxagazavepasabif.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/f7d5476016841df121aa6a85e9ae30b2/36714081478.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087fa1044e21---zujiwonasafukepa.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/98484422423.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/vomigojejujezemazuvom.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/373b6aa534f2a709f919d73c7a605999/94701568464.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/223d5016ab998f59e0948b6ec995957c/vamas.pdfIn PDF document text
    • https://petrovsky14.ru/docs/files/pizemadanekijazumujub.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/lovinajukadoti.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/a0c8ba77ae0b9108c650855bb9f6f9aa/78996958650.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/cfb7242a783e4bbc8256406a75fd25dc/42637316063.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/940885cffd3728b9eaf3bd49c6f37eda/27519638809.pdfIn PDF document text
    • http://haus-st-otmar.ch/userfiles/files/16013437464.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FE 5648 bytes
SHA-256: 24d1a0c44a08481e4dec7fafca6b5cfe1724cf8219c410800efdbb721add0e7e
font_01_sfnt_off0000fd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD17 3628 bytes
SHA-256: ebeb18bca1c7466861ac9c16e42c3b54fb4cfdbe8f53ecd3d51a83982c7d9c85
font_02_sfnt_off00010af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF8 5072 bytes
SHA-256: 4949d8e3bda7fa488f8f94ebf24d2df002921a0cead63fe5203f10bddfacbe05
font_03_sfnt_off00011b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B73 3652 bytes
SHA-256: 797fb0417e2a8375c0e4a7afe1d808208609070ab030d3d732e33e2052ec5791
font_04_sfnt_off0001291b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291B 3436 bytes
SHA-256: efa1fa8ce454591b0f7aa0158be43bad1004d4e0d7ab544c96cdf852c1459ecd
font_05_sfnt_off0001369d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1369D 10824 bytes
SHA-256: d7b2caa721908d24754c26f327a31791d35af1b8c671e6fde6493eabedf4c605
font_06_sfnt_off00015b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B9F 11776 bytes
SHA-256: 3e0e795a8675ff24c910ff5969226e2dfe020707275f8bbcaee4283e4427eb8b

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