Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ec0c2e08f2f15e…

MALICIOUS

PDF

75.6 KB Created: 2021-03-29 15:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3d355d04de692b8e6992977c111bc37f SHA-1: 5757f760b8afbedff4ccd3b882bf848e4328228c SHA-256: 14ec0c2e08f2f15e29970dec28e26d23b273d98bd1a9adfb9bbb12436c693ab7
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/123?utm_term=genitive+english+worksheet PDF link annotation
    • https://sifuparara.weebly.com/uploads/1/3/4/3/134352995/4243353.pdfIn PDF document text
    • http://watercart.ru/2277818742718jfy.pdfIn PDF document text
    • https://fudafovagovareg.weebly.com/uploads/1/3/4/8/134868702/6460411.pdfIn PDF document text
    • http://detonic-ufficiale.website/la_vida_de_david_gale_peliculam61zs.pdfIn PDF document text
    • http://carbackseat.site/molalonasaposugowuvixajusc8in.pdfIn PDF document text
    • http://rkconstructionsucks.com/dajanewutiroludabajejcltqy.pdfIn PDF document text
    • https://susutabum.weebly.com/uploads/1/3/4/4/134464128/lixobipu.pdfIn PDF document text
    • https://detaxenenikub.weebly.com/uploads/1/3/0/7/130776267/pizuvawifutuv.pdfIn PDF document text
    • https://kivisazof.weebly.com/uploads/1/3/2/6/132696558/202446.pdfIn PDF document text
    • https://pederojelukeb.weebly.com/uploads/1/3/4/8/134859697/mowalaboneli-bigotigevifo-kuxaxujaze-sidujunenug.pdfIn PDF document text
    • http://neojust.ru/gizugajoruzaralajuwilouf1m2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bfb79b04-db4d-4c54-a74a-4733ff68ceb9.filesusr.com/ugd/11291b_f5e251e22ccf4059a363b4d7d9c69a55.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/fotiwawozugomesa.pdfIn PDF document text
    • https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_de06e5072a744d90a57222db9eb7f7dd.pdf?index=trueIn PDF document text
    • https://c0a42e0f-4cce-4e1b-84a6-2a5440198d67.filesusr.com/ugd/440b6d_ac56a7cf43cf4beba4def3532e041338.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bojafazes/briggs_and_stratton_snow_blower_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/site_visit_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/7337057826.pdfIn PDF document text
    • https://bb209e34-24c3-4901-88bd-c00af8cda710.filesusr.com/ugd/de6798_1093ab21051c40e58d2e312d595abb0e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/25374550984.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
    • 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_off0000d5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CD 4984 bytes
SHA-256: 14a74a66c3247ff0d55615cad4edf3a92c70cd64b0c736b0deb4dfe83a315b69
font_01_sfnt_off0000e6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DA 10700 bytes
SHA-256: 1063b0364eddce781d3142fa6f35cab6b076875edfefb58c7c199e6bcc99f423
font_02_sfnt_off00010b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B90 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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