Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e07340c2de4e77d…

MALICIOUS

PDF

84.1 KB Created: 2021-08-15 21:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 880ddd15818209f8c984df900ac7e176 SHA-1: cb87f6690d183c8b01a3730f71f4ce2d0f94c275 SHA-256: 5e07340c2de4e77d9f3f1c7d23c52d46d9d78e7dbee3830b0de676244c3a5222
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress uploads and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://awlights.com/wp-content/plugins/super-forms/uploads/php/files/4ca741480c57f14bb223d9b5df18d723/fusasebakibiv.pdf In PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c238f8cbc60---litoj.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084634b83980---xuvunixizofiz.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/leruwosamubabi.pdfIn PDF document text
    • https://keongracun.org/contents//files/nodijofobaseditewarefi.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/2fc6b8388377bb976d3f31c145616729/88586680133.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/3b9d3557a20dc450d3346e535352b82b/botiwumikakiluzowus.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16092fa55c291c---58682412685.pdfIn PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac82e0d877---pixusubaguva.pdfIn PDF document text
    • http://rentaruedas.com/files/others/44061475060.pdfIn PDF document text
    • http://johndanton.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zuruvatuluturesebalab.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/lajulovekotazorinaxetij.pdfIn PDF document text
    • http://szguilong.com/userfiles/files/95649535518.pdfIn PDF document text
    • http://kantoromega.pl/userfiles/file/mapamudejevotuposelap.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/85447253778.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/9fe04f5588c410a41d8b83cd6018ed8f/12664353047.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/b7295557e1ba53d175596d05aa93ea93/musodeg.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/d454b461919e837922d83d6b4b016c96/tusojipugedak.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/5380639594.pdfIn PDF document text
    • http://alkanboya.com/files/file///43769366998.pdfIn PDF document text
    • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/vapadeg.pdfIn PDF document text
    • http://droprint.my/home/ququ4923/public_html/userfiles/file/kuvedewupot.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a52f461eb---45972706002.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/sabovivixalezumutexan.pdfIn PDF document text
    • http://ofipapel.org//ckfinder/userfiles/files/75161167275.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=challenge+activities+for+gifted+students+pdfPDF 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_off0000e4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FD 16448 bytes
SHA-256: 9a999b882c30aff5bb29904d3b85f500257ee7acb57471c5c24c648ea75c5a10
font_01_sfnt_off00010f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7D 11096 bytes
SHA-256: c2c290fccc87161e0e9fb521e97577a7d653b1fa166440055183435154d0ddff
font_02_sfnt_off00012925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12925 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1