Malicious PDF — malware analysis report

Static analysis result for SHA-256 df711e987e8f701a…

MALICIOUS

PDF

76.7 KB Created: 2021-03-18 22:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1822994a83ee443596b3ba5e9260629d SHA-1: c9cfc0ff3e34491a1fa7995f2c893fbe04e3f606 SHA-256: df711e987e8f701aded2ff3ac529a206f50b604581f085fef3f55a28083f3ff1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, including a link farm heuristic firing, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/123?utm_term=succession+planning+template+for+government+agencies PDF link annotation
    • http://straponartist.com/76626193628jq9y3.pdfIn PDF document text
    • http://shtangennstutkupitseychas.xyz/satebajilomi57m.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/giDvhdD/strategic_management_meaning_with_examples.pdfIn PDF document text
    • https://fejiwapofiji.weebly.com/uploads/1/3/4/6/134699364/gitiwobota-pikix.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/dzgdLjd/earthquake_san_diego_tracker.pdfIn PDF document text
    • http://shoop-fe.ru/butabozolonajeo7db.pdfIn PDF document text
    • http://hightrade.club/subacromial_bursitis_exercises_kaiser4y862.pdfIn PDF document text
    • http://menedowu.iblogger.org/pikiserabiroz.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/what_is_the_best_piece_of_exercise_equipment_to_buy.pdfIn PDF document text
    • https://cdn.sqhk.co/gederanew/wjiPjic/63849601879.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/gjiNor2/47128025723.pdfIn PDF document text
    • https://cdn.sqhk.co/rowazazapa/8gjighW/goripevasufavu.pdfIn PDF document text
    • https://pesuwoleze.weebly.com/uploads/1/3/5/2/135295903/faxivabodebezam_mosoda_baneluno.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/pilam.pdfIn PDF document text
    • http://metalllift.ru/formatos_para_analisis_y_descripcion_de_puestos_de_trabajog19lk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/mobugebiwiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/android_tv_remote_debug_es_file_explorer.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/vevor_cotton_candy_machine_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/32097764633.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/murujag.pdfIn PDF document text
    • http://rodexiguv.onlinewebshop.net/matusoliduturevilojudud.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/stop_mail_form_post_office.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFF 5500 bytes
SHA-256: 7fa35686f634725f80c66bde39a47e7ea2641665a161f7db595d15821426ce3d
font_01_sfnt_off0000fea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA6 11284 bytes
SHA-256: a5723f900435f04e84c2887a25e4383f7f104c8d330dffe41f0a5488011cdda6

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