Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18d230aba468212…

MALICIOUS

PDF

83.0 KB Created: 2021-08-02 12:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: dee402b89b3e5686d996b6728ab1c35d SHA-1: 7c27bc4e0c26896561a87c5e7aac1bb4b8bb78e7 SHA-256: e18d230aba46821261f8d34239d72e15ee3c92772ca3d5845d7432794142ed92
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://drafthe.ru/uplcv?utm_term=airtel+4g+hotspot+instructions PDF link annotation
    • http://maasmartcity.com/userfiles/file/28079865085.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16077abc3541d0---61728839144.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/makapolilatiti.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/p5e0e5fe4aebt9qab08rjctqhu/55445879538.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/45821588617.pdfIn PDF document text
    • https://boumqueur-edition.com/upload/fckeditor/file/84186785490.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7539e916dd---6160908275.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a122a5c7a---11795423924.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbffb9e429c---14806984244.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/vakatanekewamejofenosonug.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2bdf0a026b---46499148021.pdfIn PDF document text
    • http://feach.ie/images/uploads/file/bifisorowudazakigol.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/3eduq37udrbc9aq05c4k9oqu60/49555403328.pdfIn PDF document text
    • http://ulrike-mayer.de/userfiles/files/50522939408.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/kasepabajotikolalad.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/61567748449.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/18047719987.pdfIn PDF document text
    • http://www.petercar0937494634.com/upload/img/files/wixabi.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/98d770b4973c659c3656e84e0b49887f/61154514626.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098c24c2dd36---11348590047.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/f0737fbd044f26b6a6d8ebba245f3028/88062557583.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B6 10648 bytes
SHA-256: 3f24a67d7a845f32b47b89cec761a8e939a16e28d1393703e8d232212c6470ab
font_02_sfnt_off0001121a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1121A 16532 bytes
SHA-256: 496b68f0f03e852c86ab7fd3fc5271d3b6a4bb4d6361a38d716d17c821b7ac47

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