Malicious PDF — malware analysis report

Static analysis result for SHA-256 7116b0ff3f3b0750…

MALICIOUS

PDF

82.3 KB Created: 2021-03-16 07:17:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 12e6ead8ee358ecb981bfcca030c3b77 SHA-1: 99aa38e69b4a8700aecfa948b7624a9bc5d93f77 SHA-256: 7116b0ff3f3b07509ea2a9c8fcd25df5b10b9a26bbad64a6857e8873a173aa8b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=bee+syrup+meme PDF link annotation
    • http://fezanabuxa.22web.org/how_old_is_rafael_nadals_wife.pdfIn PDF document text
    • https://loxazubak.weebly.com/uploads/1/3/0/7/130739809/102cc1c60.pdfIn PDF document text
    • http://sinekem.iblogger.org/learn_russian_language_book.pdfIn PDF document text
    • https://muwalivom.weebly.com/uploads/1/3/2/6/132695892/9ba9d951458.pdfIn PDF document text
    • http://saxobufamap.22web.org/divusadikulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mudotadabamato.epizy.com/2010_chevrolet_camaro_ss_coupe_2d_specs.pdfIn PDF document text
    • https://170a7d3c-74f0-42f5-9ead-98ae292a4922.filesusr.com/ugd/a18aa6_ff5ba2d39677463bb2eea2be62de1ce2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/reporter_amharic_gazeta_recent.pdfIn PDF document text
    • http://xujalupa.epizy.com/american_college_of_surgeons_guidelines.pdfIn PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_3e11ce84ce5c46f6b0013c2dfa414e5d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/93453770697.pdfIn PDF document text
    • http://mutifesojare.epizy.com/navicular_cuneiform_arthrodesis_cpt.pdfIn PDF document text
    • http://pudegiluv.epizy.com/rawoleritofajije.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/54357520797.pdfIn PDF document text
    • http://zewixezix.epizy.com/how_to_become_a_vet_assistant_uk.pdfIn PDF document text
    • http://falalovoxiwada.epizy.com/99552918796.pdfIn PDF document text
    • http://bobakazof.epizy.com/delutugevokevaruganatiwo.pdfIn PDF document text
    • https://0926596c-b1e6-4473-87d6-fed2e709bfeb.filesusr.com/ugd/e2a635_a4fca90d70504d85a3087003c20ae2fd.pdf?index=trueIn PDF document text
    • http://vumuvewegoseme.epizy.com/temajolita.pdfIn PDF document text
    • https://520c840f-7702-4e28-87de-278da5b03b63.filesusr.com/ugd/e633b3_80adc4f70ab9413e86f264ed9d69940b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/34179203190.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

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_off0000fa13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA13 4412 bytes
SHA-256: c2ce4e1c84d93dbd928deb581db3f9e6fbf99dcc4eb514b46e0e47556a4130bd
font_01_sfnt_off00010904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10904 10784 bytes
SHA-256: 99350ecb402e397256a0e2d5e3c2a3aae4dbd58ba2bbf0d43c079f8bb0ccade9
font_02_sfnt_off00012db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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