Malicious PDF — malware analysis report

Static analysis result for SHA-256 46edd7ee5d660b10…

MALICIOUS

PDF

73.1 KB Created: 2021-09-14 00:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 23fa4924c7316c74bb64c06f21387bfa SHA-1: 892f68e7a62387b0931c5fc606868f23b564bae7 SHA-256: 46edd7ee5d660b10c0030d1c9bf63f080465cfb54ed5fefc681bb62cf38cf235
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple domains, some of which are hosted on compromised CMS uploads. The presence of numerous PDF links and the use of 'utm_term' parameters suggest an attempt to manipulate search engine rankings for malicious purposes. No scripts were extracted, but the overall structure points to a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://immobilieninvestors.com/userfiles/file/giberurozuv.pdf In PDF document text
    • http://placidlakes.com/larpm/uploads/file/99891853620.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/59ed67dc0b9055ccfea5ef09c336f334/20015485866.pdfIn PDF document text
    • http://lmalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/79983800298.pdfIn PDF document text
    • http://galsabino.it/userfiles/files/dodemi.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/6btp2t1u61q62b2ea7hop3dc0v/31106527483.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/20313417064.pdfIn PDF document text
    • https://somogyplusz.hu/files/xaforavepebirufufeva.pdfIn PDF document text
    • http://serenetour.com/image/upload/File/8945849868.pdfIn PDF document text
    • https://pointswestliving.com/ckfinder/userfiles/files/mapatimifogukesekabiwexa.pdfIn PDF document text
    • http://theponghop.com/upload/files/56387652610.pdfIn PDF document text
    • http://showpalmedical.com/userfiles/47183588253.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210908193140.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138ab493e746---zunugaruvurugumuzapefo.pdfIn PDF document text
    • http://hylimusic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/50217998805.pdfIn PDF document text
    • http://digifast.cz/userfiles/nizod.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612ffabdb1eb5---daxapunosotevag.pdfIn PDF document text
    • http://qkmedica.com/uploads/userfiles/file/42972310676.pdfIn PDF document text
    • http://topnotchimports.com/ckfinder/userfiles/files/67833054254.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e07b5d9581---76629887141.pdfIn PDF document text
    • https://pre-www.bridge-college.com/uploaded/ckeditor/files/wowalaluxumagoj.pdfIn PDF document text
    • https://piti.leaddeehub.com/userfiles/files/mibemipukefogudo.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/728f5a92b3f99088641496a69cfe7054/purakuroligol.pdfIn PDF document text
    • https://5ky13lu3-1251.com/contents/files/vikejutibesutulo.pdfIn PDF document text
    • https://pmms-online.com/assets/file/16813701746.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/piselejodikuwisibek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=incredible+hulk+apkPDF 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_off0000ba14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA14 10508 bytes
SHA-256: 13dedb31f4db0793ddc3f0cf78081dccba6b1d1931a1155f3da6bd48338d7340
font_01_sfnt_off0000d197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD197 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A9 17432 bytes
SHA-256: 59b3ff9a16274c9a7a2b9ce32b3632098e0769fa91a00e6b793a5b4ee100d7c9

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