Malicious PDF — malware analysis report

Static analysis result for SHA-256 180f562cec861cea…

MALICIOUS

PDF

79.3 KB Created: 2021-09-11 19:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2659e7779c551b0c16cd9045d1901ca8 SHA-1: 4ca60e3a12a3f7750cf3151c91b5c9d5d1f51b6d SHA-256: 180f562cec861cea41683f2b217e2a576ea590d162cdd38df02daa189e5c677c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious document, including a link farm pointing to compromised CMS uploads and a raw IP address. The ClamAV detection and ML classifier strongly suggest malicious intent. The document's purpose appears to be to trick users into downloading additional malicious files via the provided links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa4d05fcc7---tasugunoposafugotum.pdf In PDF document text
    • http://autobedrijvenindex.nl/images/uploads/rogovigulag.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/81048645350.pdfIn PDF document text
    • http://lor-rostov.su/userfiles/files/meziburajuwipevinupopoxo.pdfIn PDF document text
    • https://bwawarszawa.pl/upload/file/93695513272.pdfIn PDF document text
    • https://gizaviation.com/uploads/files/fuvesuduburakepekidise.pdfIn PDF document text
    • https://sofupingame.com/calisma2/files/uploads/negobomewuxudilafesawo.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/28410270837.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/4ffa4760b115d521fb9331c9bfa1b017/dirafofejuzeg.pdfIn PDF document text
    • http://soojuspilt.ee/files/file/wexunug.pdfIn PDF document text
    • https://odontologosmalca.com/images/userfiles/file/xumekumudosamipadalexopa.pdfIn PDF document text
    • http://word.mn/uploads/assets/93652115750.pdfIn PDF document text
    • http://ulsantour.com/FileData/ckfinder/files/20210903_D9D765228E06E35A.pdfIn PDF document text
    • http://sibzakon.ru/ckfinder/userfiles/files/vufesa.pdfIn PDF document text
    • http://bilmatbasim.com/userfiles/file/8668492552.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/d6c822ad4ba52b491ddef7fb2cbb51bc/11442581548.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/47078193820.pdfPDF link annotation
    • http://fasson.vip/images/editor/files/20298067878.pdfIn PDF document text
    • http://didopack.com/files/21963573348.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20210904140112.pdfIn PDF document text
    • https://menokatea.in/ckfinder/userfiles/files/44930430718.pdfIn PDF document text
    • https://oilbasaro.com/web/images/ckfinder/files/20210910175404.pdfIn PDF document text
    • https://pyccenter.com/images/Upload/file/negipobelakuzitezorefup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=confessions+of+an+economic+hitman+in+tamil+pdf+free+downloadPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000badb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBADB 11000 bytes
SHA-256: 67c734842fb66563031d26bc46def1b83fee7c370b9aeaa082ca01b30b98c074
font_01_sfnt_off0000d451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD451 16712 bytes
SHA-256: ebe7edb079a9c9a63643c0f7d3234503b4007b563a3567bd6729a48845fcce17
font_02_sfnt_off0000ec03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC03 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00010415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10415 16748 bytes
SHA-256: fcd074c8fd8bf3d17a359f44511d2d2c1b0f78fac910c0025c2edd75caecd0fe

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