Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8292950f869d50…

MALICIOUS

PDF

81.8 KB Created: 2021-08-26 00:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: ce2441f5709f1f9c133a71b462495ca6 SHA-1: 12930df0345f9b3fda1ef18858fc159b682a58f5 SHA-256: 0b8292950f869d500707ee5e28fc4d895c7971b89759b3f9ed95ef9232e5e708
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as a link farm and by a machine learning classifier as malicious, with ClamAV confirming it as a phishing trojan. The document contains numerous links pointing to various domains, many of which appear to be compromised or disposable, suggesting an intent to redirect users to malicious sites for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/14769386468.pdf In PDF document text
    • http://copy2d.com/ftp/image/file/75967243184.pdfIn PDF document text
    • https://247christianity.org/fckeditor/userfiles/file/825340288441620577832.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9541f7b205---kigajon.pdfIn PDF document text
    • https://purmoradiatoriai.lt/images/files/vimazasutixunamosabove.pdfIn PDF document text
    • https://elperrocallejero.info/ckfinder/files/13657383994.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/a511384fb1cf9f87579d39ca694afa17/kiwixoximavuvexaxe.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ab1dc1dfba1---71020142002.pdfIn PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/xajiv.pdfIn PDF document text
    • https://ka-base.no/images_students/files/53474255246.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/0a2b3ff5b0af14c30777a1c3bf8f9728/jupuvinenofanulumawe.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16081d2e925b63---31126180557.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e00a118639---10330079156.pdfIn PDF document text
    • http://haohanlegend.com/Uploadfiles/files/42365578510.pdfIn PDF document text
    • https://taipeitccia.org/CKEdit/upload/files/36774935154.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/25963875661.pdfIn PDF document text
    • http://dzwigipoznan.pl/userfiles/file/30456097686.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021061600570323.pdfIn PDF document text
    • http://franceplus.fr/userfiles/file/51844804183.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/83043836025.pdfIn PDF document text
    • https://sinarwaja.com/account/files/29152936223.pdfIn PDF document text
    • http://saxons99.com/clients/5/5f/5faa49e4155ddd0d4faf97b0d7aa3dde/File/55407929805.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/94959260470.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/rajimizuxezanege.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=use+the+intercepts+to+graph+the+equation+calculatorPDF 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_off0000dc58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC58 16884 bytes
SHA-256: 5a9928a2e755e1aa5eba5b21dde44e22489eee329861f73041970aa0548de13f
font_01_sfnt_off0001085a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085A 10908 bytes
SHA-256: 3171e74268cf82b157a1f6d4d1e0b06feebfeca2b9879fea03e08973d2b91ad7
font_02_sfnt_off00012145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12145 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.