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)
MD5: 60b262dd69fb8559a06c0365c26de54b SHA-1: 7338be480bb25a7f581570fc5d385c04dc88afdd SHA-256: df2185952779dbc33c90e948565b3a438b6b0e3578403f6bd3fd179ca9c81b51
156 Risk Score

Malware Insights

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

This PDF contains a large number of external links, many of which are dynamically generated, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
    • https://jitebogegamoma.weebly.com/uploads/1/3/4/7/134761197/jiliverinowabulutal.pdf
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/rirelolelunawaz.pdf
    • https://fubofekibodubeb.weebly.com/uploads/1/3/4/4/134483790/mavozowawolawosute.pdf
    • https://fomofasagulak.weebly.com/uploads/1/3/4/8/134860280/26bda8e149.pdf
    • http://ribipozosotol.iblogger.org/deux_arabesques_sheet_music.pdf
    • http://xokubenafap.66ghz.com/strength_of_materials_by_rk_rajput_file_download.pdf
    • http://mushygushysayings.com/o_que_e_pesquisa_bibliografica9r53p.pdf
    • https://wavamabixalovag.weebly.com/uploads/1/3/4/5/134525364/f08da3560.pdf
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/kelesusox.pdf
    • http://cozyplacefor.rest/davis_drug_guide_albuterolmf73a.pdf
    • http://stickerrus.ru/77308596759uds21.pdf
    • https://budekimezarusij.weebly.com/uploads/1/3/5/9/135964348/wujinokelabi.pdf
    • https://daniwevuwawudo.weebly.com/uploads/1/3/4/8/134849628/xakeropegas-gogalame-vupiviseno-wososona.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_d729656047694380a775e74abbadf355.pdf?index=true
    • https://s3.amazonaws.com/magapeguwabe/how_to_connect_jbl_flip_2_to_computer.pdf
    • https://b4140449-9b96-4148-8619-c9b3eed7b48c.filesusr.com/ugd/c33cdb_703b2a1b46cd48b39bc7f5ddc5bb0878.pdf?index=true
    • https://s3.amazonaws.com/debiwelof/tax_administration_act_tanzania.pdf
    • https://86042ffc-9b62-460b-8552-fb2522205a17.filesusr.com/ugd/4f92c1_dc8a45380b124770bac394d9e5c419dc.pdf?index=true
    • https://s3.amazonaws.com/kudufigunabi/42761087773.pdf
    • https://s3.amazonaws.com/gitipelut/lozogotepodoserekimije.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd7.bin
68c89f4e76acf2ee30b7ec389662e8354a51a74449a56e2d9972ea537689a6c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD7 5716 bytes
font_01_sfnt_off0001015e.bin
2bdafb6a09c50e76d71e3fb346d7c01d3ef5069ba5f6e233b4bd5340b48232b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1015E 10540 bytes

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