Malicious PDF — malware analysis report

Static analysis result for SHA-256 60de552a23b50c13…

MALICIOUS

PDF

88.6 KB Created: 2021-09-15 13:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c4eee5fd739cb3174b0c268510dd4fa0 SHA-1: 082fc99418e7a5c9ba7ae0d6c9ca437451d6f239 SHA-256: 60de552a23b50c13833ae9c57e2077a67ce2c487930b7575e0e9042915f9b564
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to a variety of domains, many of which appear to be compromised or disposable, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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://ketchas.ru/uplcv?utm_term=meilleur+gps+payant+android PDF link annotation
    • http://uniondrygoods.com/fckeditor/userfiles/file/rijijuxodik.pdfIn PDF document text
    • https://inprovitcaribe.com/ckfinder/userfiles/files/divabemetowo.pdfIn PDF document text
    • http://tiquital.com/documentos/file/99083023451.pdfIn PDF document text
    • https://rajatotogroup2.com/contents/files/davakifereses.pdfIn PDF document text
    • https://umartravel.com/files/mewoxonaxemeropizim.pdfIn PDF document text
    • http://immopolignano.lu/images/27185724534.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/lozomagitanopubu.pdfIn PDF document text
    • http://asude.istanbul/ck_images/files/58800313828.pdfIn PDF document text
    • http://fotosvatba.net/userfiles/file/batukabunox.pdfIn PDF document text
    • http://professionalcatererspaul.pageindia.com/resume/cms_files/files/63780700069.pdfIn PDF document text
    • https://mokhalasati.com/userfiles/files/tawobaz.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/d9d182547a075047e3f0079378f23afd/duwowuvewinijuki.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16130288e32e10---mukevokan.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139b404187f0---23831486235.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/64929594858.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/fizasoponuzutipitefilobuk.pdfIn PDF document text
    • http://egyptlance.com/userfiles/file/41769989177.pdfIn PDF document text
    • https://thibiditrading.com/public/userupload/files/29032808210.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/2f56030d77b143108e5c6cd613edc091/jizukifuwedekokanazojoxaj.pdfIn PDF document text
    • https://testagenda1.myagenda.cz/pictures/editor/files/xiwokoj.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/83521851581.pdfIn PDF document text
    • http://artgrafika.cz/userfiles/file/85009167490.pdfIn PDF document text
    • https://et-auditing.com/userfiles/files/fiwasupom.pdfIn PDF document text
    • http://xn--80aaaghhaztbcd1agjgbccsgfftf.xn--p1ai/pict/file/85353101246.pdfIn PDF document text
    • https://lajovisena.com/gallery/file/pitem.pdfIn PDF document text
    • https://aprenda-atdi.com/uploads/files/34496454501.pdfIn PDF document text
    • https://smshealthcareservices.com/ckfinder/userfiles/files/72859794654.pdfIn PDF document text
    • http://xn--80aafjbaeihgganggf9ajkncugh2a.xn--p1ai/pict/file/57498039617.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_off0000efb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000107ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CE 10772 bytes
SHA-256: 490f38ff6ab09b23c78ac468f191ab071ff222a203ed372a109329ba923261b0
font_02_sfnt_off00012082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12082 20584 bytes
SHA-256: 0c4e350efc1e277793a0105f65a277f37f20d2948235dc046cac73dea0056744

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