Malicious PDF — malware analysis report

Static analysis result for SHA-256 29878d891f9effe8…

MALICIOUS

PDF

82.0 KB Created: 2021-03-10 08:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d7f67481d7f47353077dba30d7263d98 SHA-1: 57885d49a86d73398c6cc6d35518c9d54a7d44de SHA-256: 29878d891f9effe8de9d9342221f0de529247d71bc4d89f2cddb606010a4f641
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 0.9994

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://ponafet.ru/aws?utm_term=what+does+sacrosanctum+concilium+mean PDF link annotation
    • http://nubolutlion.xyz/970367514939lbqx.pdfIn PDF document text
    • http://podcard2020.site/blubber_judy_blume_freeq4354.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/lebagumelewesudugezo.pdfIn PDF document text
    • http://damvglaz0.xyz/mohabbatein_full_movie_shahrukh_khan_downloadtvg0j.pdfIn PDF document text
    • http://it50discount.pro/boardroom_limited_singapore_annual_reportdsu9e.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/persuasive_writing_samples_grade_5.pdfIn PDF document text
    • http://copyright-supporthelp.com/what_is_a_class_b_license_in_mn5jhw9.pdfIn PDF document text
    • http://xomunuxeju.sportsontheweb.net/esercizi_di_analisi_logica.pdfIn PDF document text
    • http://copyright-central-media.com/toyota_sienna_owners_manual_2015ffldj.pdfIn PDF document text
    • http://front-glass.website/swot_analysis_of_nokia_phonetix8s.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/2479e8e9-7c42-4f2f-bc11-e06de46ad69e/raguni.pdfIn PDF document text
    • http://lewinozed.atwebpages.com/32817380187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec529086-d2b0-475d-8e3e-4ab5d2ca5027/sat_essay_practice_test_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe9dca4-d361-4b71-9088-3c305ff4e580/how_much_is_a_bowflex_worth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6bd89cd-13a9-4a4e-9e35-b3ffb61eace8/can_body_weight_training_lose_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a06d1f15-af83-4a50-bac4-a98db2615ecb/laxipewopubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecdf584f-5dde-40c7-9f5f-e550249c638b/87099782103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771aeffb-ff7e-4378-93ef-656a45344c8a/42615363559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2aa18b-ae2d-456d-96f1-802d51fb74a6/outlook_preview_handler_not_working.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/44855418610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b564bed6-5814-464a-8bc8-86f32a19c315/56579581509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9758a4d-7cd5-4766-b566-8bcf2f915dad/wepovunap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd65f848-90a5-4a8a-810f-eca5c3d9229d/wapeduwotiwidu.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_off00010520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10520 5192 bytes
SHA-256: 83b5cdef5bc2f8b083542fd790aeff91fe8b275d3f2ec5060b5a15c5e875da00
font_01_sfnt_off000116a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116A9 10448 bytes
SHA-256: 446804810c92bbe4a81064f4a73a93180f51aabe21510149b65ca2910428fb4d

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