Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d70b02a7d1d444f…

MALICIOUS

PDF

85.7 KB Created: 2021-09-07 13:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6ec20da92687363c578dbf5df577e17c SHA-1: 4809bd533b4b206b10b1d61de04f3b088dc1d5da SHA-256: 7d70b02a7d1d444f37b3ad3c7f3edda1666191c688ea931d4640334990eb27cb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • 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
  • 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://garglob.ru/uplcv?utm_term=logitech+craft+manual PDF link annotation
    • http://www.photonics-science.com/ckfinder/userfiles/files/3369410286.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b95e6600bef---nibemopumuxiruneneb.pdfIn PDF document text
    • https://tlproduct.com/userfiles/file/pozigofexobadagajob.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160741f122ce3d---84263281718.pdfIn PDF document text
    • http://autoscuolecasetta.it/userfiles/files/34449548621.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3d3d7770c---kumalasobumudebipi.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20210623/2106230243256742567mordt0wfyln.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/dg7pm1dnb7j1u12r78kp5ipvsb/90143807679.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a539d956789---67364995940.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9bcb24e30---34539929658.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3cfd7ea6c---77702237082.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/acd5c81fce4e03773b154e3da9a8ee1c/88476508496.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aedd17863b3---zononetawipewinagojuluwu.pdfIn PDF document text
    • https://global-product.org/CKEdit/upload/files/baworeloxefokid.pdfIn PDF document text
    • http://4bx.pl/public/file/2434573925.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16079f20fd10b2---95794398187.pdfIn PDF document text
    • http://goldmustang.ru/files/files/zeviwuxatalexeza.pdfIn PDF document text
    • http://kimdaiphatsteel.com/Images_upload/files/13417774244.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085e07ca0b96---xisusatonatavoga.pdfIn PDF document text
    • https://buildingexpertsdirectory.com/ckfinder/userfiles/files/54108111574.pdfIn PDF document text
    • http://lblussana.it/images/file/25916583403.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/40133768434.pdfIn PDF document text
    • http://azizolace.cz/images/file/zilopapudadulopemolakalol.pdfIn 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://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_off0000e6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A9 10672 bytes
SHA-256: e0ad797b1ffcaeafbec49f8953327ab6376b43bca3f2c3273b491d46159c246e
font_01_sfnt_off0000fee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE8 19272 bytes
SHA-256: 8bfa8155600e0751576dd21c5e341dc5f6db2587cd0d8004553fc78b6ea5c49b
font_02_sfnt_off00013113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13113 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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