Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2185952779dbc3…

MALICIOUS

PDF

76.6 KB Created: 2021-03-18 01:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 60b262dd69fb8559a06c0365c26de54b SHA-1: 7338be480bb25a7f581570fc5d385c04dc88afdd SHA-256: df2185952779dbc33c90e948565b3a438b6b0e3578403f6bd3fd179ca9c81b51
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://nipisod.ru/award?keyword=conjunctions+worksheet+8th+grade+pdf PDF link annotation
    • https://s3.amazonaws.com/magapeguwabe/how_to_connect_jbl_flip_2_to_computer.pdfIn PDF document text
    • https://jitebogegamoma.weebly.com/uploads/1/3/4/7/134761197/jiliverinowabulutal.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/rirelolelunawaz.pdfIn PDF document text
    • https://fubofekibodubeb.weebly.com/uploads/1/3/4/4/134483790/mavozowawolawosute.pdfIn PDF document text
    • https://fomofasagulak.weebly.com/uploads/1/3/4/8/134860280/26bda8e149.pdfIn PDF document text
    • http://ribipozosotol.iblogger.org/deux_arabesques_sheet_music.pdfIn PDF document text
    • http://xokubenafap.66ghz.com/strength_of_materials_by_rk_rajput_file_download.pdfIn PDF document text
    • http://mushygushysayings.com/o_que_e_pesquisa_bibliografica9r53p.pdfIn PDF document text
    • https://wavamabixalovag.weebly.com/uploads/1/3/4/5/134525364/f08da3560.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/tax_administration_act_tanzania.pdfIn PDF document text
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/kelesusox.pdfIn PDF document text
    • http://cozyplacefor.rest/davis_drug_guide_albuterolmf73a.pdfIn PDF document text
    • http://stickerrus.ru/77308596759uds21.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/42761087773.pdfIn PDF document text
    • https://budekimezarusij.weebly.com/uploads/1/3/5/9/135964348/wujinokelabi.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/lozogotepodoserekimije.pdfIn PDF document text
    • https://daniwevuwawudo.weebly.com/uploads/1/3/4/8/134849628/xakeropegas-gogalame-vupiviseno-wososona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_d729656047694380a775e74abbadf355.pdf?index=trueIn PDF document text
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_703b2a1b46cd48b39bc7f5ddc5bb0878.pdf?index=trueIn PDF document text
    • https://86042ffc-9b62-460b-8552-fb2522205a17.filesusr.com/ugd/4f92c1_dc8a45380b124770bac394d9e5c419dc.pdf?index=trueIn 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_off0000edd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD7 5716 bytes
SHA-256: 68c89f4e76acf2ee30b7ec389662e8354a51a74449a56e2d9972ea537689a6c2
font_01_sfnt_off0001015e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015E 10540 bytes
SHA-256: 2bdafb6a09c50e76d71e3fb346d7c01d3ef5069ba5f6e233b4bd5340b48232b5