Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8245309fc0efb4…

MALICIOUS

PDF

70.8 KB Created: 2021-03-14 08:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8eb7ee7a23c7382d4942ac1bd09df536 SHA-1: 9411ba147a2792fc5a5bd28f61b591ff2be9f6a9 SHA-256: ee8245309fc0efb4f85c3ed0a1dc7c7d1fe9b0b20832e5e1ab905324be15e0a4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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 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://xezojetit.ru/123?utm_term=famille+nombreuse+reportage+tellement+vrai PDF link annotation
    • https://cdn.sqhk.co/daluzowinasu/kjfigjd/monkey_wrench_gang_characters.pdfIn PDF document text
    • http://securityverifiedservices.com/tosawat38d3.pdfIn PDF document text
    • http://fb-copyright-help-from.com/how_to_work_out_the_length_of_a_triangle_using_trigonometryyrcjo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498997/normal_602d02c65b4de.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/hfGRlgc/tojofisiwizanefemog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416125/normal_6003239da0993.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvatagukas/6rihFhc/t_i_idle_robbery_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390381/normal_604b333bf0072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470681/normal_6011f27f479a5.pdfIn PDF document text
    • http://successinyourlif.website/dizonenoxedobalil6h8w5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b2f716-a536-4589-8fb7-027c2962825f/lururafujolabifosexadeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3556473-a567-4424-ae61-427638c9d21c/xuwafulubanavajupesunede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b79f5bc1-cb81-4d60-8d9b-240d3c8b189e/xowoluvi.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/kulukosabemuvoruvej.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/nenilomuzinenokopeta.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/wajewibures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daef4961-8b67-4ae9-b705-6f968897515c/7250444708.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/8398518899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85692502-e7b8-4bba-ab61-2c76e6a9da80/bissell_poweredge_pet_hard_floor_corded_vacuum_81l2a_same_as_81l2t.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/unsuccessful_interview_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/basafamajisibutavixovimog.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_off0000d598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD598 5292 bytes
SHA-256: 3dda0c137fc84079297f2a0142b61d048b3be5eee3e2515fad75e7f7b067726d
font_01_sfnt_off0000e78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 11372 bytes
SHA-256: 81c8288ac44eb99872e2dd4307b006e5f3b9c89dbfbd022f649f031570a49018

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