Malicious PDF — malware analysis report

Static analysis result for SHA-256 d268ce5c449aaf99…

MALICIOUS

PDF

84.2 KB Created: 2021-08-22 01:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d97cdcd7b2435a008befeba081f71a84 SHA-1: 105ad05e92ab747a05aa4632f02755eba5e645d5 SHA-256: d268ce5c449aaf9925484a70bcdc836f737d52e66796db53d16e1289a7c24a6d
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating it likely contains an exploit. The document's structure suggests it's a link farm, with many URLs pointing to potentially compromised websites. This behavior is consistent with phishing or malware distribution campaigns, where users are lured to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/809dbad9ab476fde8a084e1bfb5ec375/54350245860.pdf In PDF document text
    • http://romengo.com/ckfinder/userfiles/files/41956974397.pdfIn PDF document text
    • http://trans-serwis.com/userfiles/file/xipijadivolepadane.pdfIn PDF document text
    • https://falconshipping-uae.com/userfiles/files/fetitesotiwas.pdfIn PDF document text
    • https://linker.tw/files/40110239814.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/edc327664770ecbe411b7f676b298f55/53613442329.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/29229491265.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/fafitijabifuranaradezow.pdfIn PDF document text
    • https://serviceservice.eu/userfiles/file/pawexokuvinetaj.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609cfa51bb688---18354870824.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094713bc8368---70626966057.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee5950cf511---23366457489.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4724ce67f7---dovolewagexodixisunasub.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/070qvkh8fduq91t0plni2etot0/kuzezemujosapuxeluf.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/9325495236.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/pelupasuv.pdfIn PDF document text
    • http://anquocrealty.com/uploads/image/files/wuwidow.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/d862f02c4d742afba87b7eb01f775573/51771816707.pdfIn PDF document text
    • http://oryginalnedekoracje.pl/userfiles/file/refevi.pdfIn PDF document text
    • http://bycongroup.com/UserFiles/file/51005202136.pdfIn PDF document text
    • http://micronforgacsolo.hu/UserFiles/file/lalanivopodovowetiz.pdfIn PDF document text
    • http://kco.su/userfiles/file/35901124628.pdfIn PDF document text
    • http://cuatudongnhatrang.com/uploads/files/91242089862.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=quantos+livros+tem+a+b%C3%ADblia+dos+judeusPDF link annotation
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/c31d3c697704dc387b43ba73ccad6b67/japexodabubadajebolari.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_off0000e1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A0 10964 bytes
SHA-256: 91ed68d87c9354b4b1026ce264a210a7ff08bdf1cb614c55f666561a9edf8f35
font_01_sfnt_off0000fb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB14 18496 bytes
SHA-256: 070047dabef9184364c54ed7a0df0385d891e82a29276c2544a487486473afe2
font_02_sfnt_off0001284d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1284D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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