Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca24348a2696f9d…

MALICIOUS

PDF

74.2 KB Created: 2021-03-15 09:42:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 445d65a396fa08f697312d1dd4def779 SHA-1: edcb801bca0a1d5da5803e5f117506797c6b9366 SHA-256: fca24348a2696f9d3e845fab5ac2f87b1d83ecb44d1cd33869b9e3c6a04358ef
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. It contains numerous embedded URLs, with https://ponafet.ru/award?keyword=mapreduce+tutorial+pdf being a primary example of a lure to a potentially malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific content beyond the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=mapreduce+tutorial+pdf PDF link annotation
    • http://kuwawaf.mypressonline.com/xepaborojope.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476133/normal_5fe0ab2bd7357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_60261e544a795.pdfIn PDF document text
    • https://cdn.sqhk.co/webaxepibi/e03ejiy/71062422727.pdfIn PDF document text
    • https://cdn.sqhk.co/gosukutusu/kDvS3ja/ice_princess_lily_2019_imdb.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/31134394432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485450/normal_602acf2a33b3c.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/jdUIDav/magical_lands_a_hidden_object_adventure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nalirabagetovop.epizy.com/vilifasesulapezuw.pdfIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_29648b34161845a4b6a9935cc960c4b0.pdf?index=trueIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_e049fbb927e946b3a586b0bf95ca4511.pdf?index=trueIn PDF document text
    • https://98748e4b-3258-471a-903e-8ea98415cca0.filesusr.com/ugd/fd7405_21e69110c47b4c41a59f5775ea234b1f.pdf?index=trueIn PDF document text
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_215b4cb9e86045dab77374dfb2b38dfc.pdf?index=trueIn PDF document text
    • http://nozuwodapa.epizy.com/puwowinavurilojamoxa.pdfIn PDF document text
    • https://c03439ef-6557-4199-865e-586791a52b6c.filesusr.com/ugd/6bb4a2_0b969312ed224d1088796dbc2d75907d.pdf?index=trueIn PDF document text
    • http://sokekakeloji.onlinewebshop.net/how_to_put_plt_legend_in_pairing_mode.pdfIn PDF document text
    • http://tobikinos.onlinewebshop.net/the_endless_summer_2_download.pdfIn PDF document text
    • https://f1801c53-b3f5-4b94-a9b3-4bb8eb376a66.filesusr.com/ugd/af633f_e3fa86095fdf47479fca7eddb48fe86a.pdf?index=trueIn PDF document text
    • http://tufopabapud.rf.gd/the_crown_season_3_episode_4_historical_accuracy.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_off0000e750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE750 4976 bytes
SHA-256: 50eb85abcf075b00cf4ff3f7dc2f143f1c2b7ec8690defc97aaeaf03b4190969
font_01_sfnt_off0000f85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85B 10464 bytes
SHA-256: 51e480e78b65226cbde52d78abb0370eff1ecf09cbba34eb14f9773896be1f5c

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