Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebec68b28583241a…

MALICIOUS

PDF

70.2 KB Created: 2021-04-06 18:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d685d8e4be4e8b58e7c12995be4c67d0 SHA-1: 7b4a1184c6bc7695c157b654c8103474f965e7ca SHA-256: ebec68b28583241a9a940e577722deb5e18f917112df3d841fee46180f529cc8
156 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The document contains numerous external links, with a significant portion pointing to potentially malicious domains. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest an attempt to redirect users to malicious content, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/strik?utm_term=brother+gx+6750+typewriter+ribbon PDF link annotation
    • http://zigapajuxijado.mywebcommunity.org/bofud.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://mukuwasoveta.sportsontheweb.net/bhagavad_gita_chapter_8_slokas_in_sanskrit.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/wie3zje/dixonapepu.pdfIn PDF document text
    • https://cdn.sqhk.co/perokokamosa/ic1iiYp/ding_ding_plush_throw_pillow.pdfIn PDF document text
    • http://dirtygirl.fun/fictional_narrative_writing_examples_5th_grade4a01p.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/gijjqI9/online_shopping_uk_food.pdfIn PDF document text
    • http://getplafond.xyz/serudjos2w.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/icgXIhb/forest_rescue_bubble_pop_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/jjcYShe/godozadoluwaxisodom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/fajugimibire.pdfIn PDF document text
    • https://94db4134-5784-44c5-a63d-963e509970fa.filesusr.com/ugd/9c58c5_1c7ec31af47247419ea96502dbd8c660.pdf?index=trueIn PDF document text
    • https://200ee3fc-349d-4871-b5c3-2c1c69b60476.filesusr.com/ugd/7b00a0_19aed9f58af146ae80609aca6037fcaa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/kijimikixajoluketeb.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/goravites.pdfIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_d7fc096c9b434deaa9e6a6a90bd40de1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/falling_stars_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/cape_westwind_tank_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/gogeratalafuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/34725505371.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/bedudonozezeme.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/dixie_narco_501e_live_display_manual.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_off0000d24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24F 5612 bytes
SHA-256: aadb3953c38dd332e63aab1d2428711938c865ade1fd5f130a1dd9af2d6c5723
font_01_sfnt_off0000e595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE595 10496 bytes
SHA-256: 0e027cc3625720f8da66604363ced16ffe810e21bef0094cdf1ab638a292a33d

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