Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32489507b89ed69…

MALICIOUS

PDF

77.3 KB Created: 2021-03-24 04:04:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d0c1ffb4ab38537405ecce55172a2b2f SHA-1: 1b88524385af708802d2bfc6ae2c69b36637df25 SHA-256: e32489507b89ed69bbcd13fc2d982b4f8958a40de8bb86a8ac29a352bf24e512
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 0.9996

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://seumenha.ru/123?utm_term=bogan+film+video+songs PDF link annotation
    • http://pedagodogiko.getenjoyment.net/how_do_i_get_my_original_birth_certificate_before_adoption.pdfIn PDF document text
    • http://nituzovido.getenjoyment.net/waresovu.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/zuwegiwel.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/yhPewjc/15025585107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392651/normal_6041c14d56fc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487663/normal_604d7f021c5b4.pdfIn PDF document text
    • https://cdn.sqhk.co/famogidoje/c0HhhUs/grey_s_anatomy_season_4_episode_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/iebMrhf/taniwopidajabokejoj.pdfIn PDF document text
    • http://kifevoliga.iblogger.org/electronic_fuel_injection_system_block_diagram.pdfIn PDF document text
    • http://gopidap.scienceontheweb.net/zidekunewowok.pdfIn PDF document text
    • https://cdn.sqhk.co/jipogidara/Lhbjh9N/zumirodemovamuvogege.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4a5660cc-52a2-48ff-9acb-4b4f1704cb6e.filesusr.com/ugd/81868d_9226356b73004803bf2f42e959c2dcab.pdf?index=trueIn PDF document text
    • https://7fd92c66-d3af-485c-b7a9-31529ddfb1b5.filesusr.com/ugd/997d0f_ceeaa92f5dd34c8ca38dfd958af51c30.pdf?index=trueIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_7b1ef76bc8a445cdae84eca935279783.pdf?index=trueIn PDF document text
    • http://pijosufun.myartsonline.com/passive_voice_exercises_intermediate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd2d561b-a205-4880-8d10-a4c6955be091/how_to_move_a_window_with_keyboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14801f83-e3a1-4f8d-8fba-43ce9c123daa/songs_of_innocence_and_experience.pdfIn PDF document text
    • http://jajoxutevo.epizy.com/sonak.pdfIn PDF document text
    • http://jawevobafepen.epizy.com/48423824724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ca79320-095d-4149-a6af-4c2fc5534331/does_disney_plus_have_the_marvel_movies_in_order.pdfIn PDF document text
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_4d13713af15243a1ab86cf1c24203da2.pdf?index=trueIn PDF document text
    • https://f621ecf8-e26c-4db3-9bdf-176eeceb312d.filesusr.com/ugd/b3755e_8177bcdc3b804b3ca63922b29f4574fc.pdf?index=trueIn 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_off0000efb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB3 5240 bytes
SHA-256: ea0e0cec490b9b04605c5aa197880469bfacdc55c7850380feda5d09c24a254f
font_01_sfnt_off0001018d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018D 11348 bytes
SHA-256: 7a1b6f7c543ed6bbff90edfcfc19163733881016508be05a50b9602b361afc3e

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