Malicious PDF — malware analysis report

Static analysis result for SHA-256 14660543528ef882…

MALICIOUS

PDF

80.9 KB Created: 2021-03-15 21:48:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ad3c22f5ab4fdfabcf0a015c0d360a8f SHA-1: c9de430a7723d2738efaadb578aedbfbbf94059b SHA-256: 14660543528ef8820b27084fa861a262a0eab9ec89f62c28a0f6d2f459ede727
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a phishing lure through its embedded URLs. The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting an attempt to redirect users to phishing or malware distribution sites. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://midufefew.ru/award?keyword=pdf+gametogenesis+pada+manusia PDF link annotation
    • https://cdn.sqhk.co/feduvefas/jjihqZS/fantasy_tower_defence_3d_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/wavagowew/gcKephi/daily_checklist_app_iphone.pdfIn PDF document text
    • http://tamogulaganero.scienceontheweb.net/que_es_la_caries_dental.pdfIn PDF document text
    • http://didazema.mypressonline.com/zulubu.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/ddNqihd/the_archers_2_bow_guide.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/80873906974.pdfIn PDF document text
    • https://cdn.sqhk.co/givukugitewe/ie0gigf/12761194816.pdfIn PDF document text
    • http://maxirem.mygamesonline.org/52252228009.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/W7OVhgi/josey_jewell_injury_report.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/nisoxow/apache_web_server_tutorial_point.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/zajabafomiraxapekof.pdfIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_948a7ef6875b4b19a5deb578013d9baf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/daniwodug/kaxajirejix.pdfIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_db8dbc8495bf44f3ad3e27cfe0663b0f.pdf?index=trueIn PDF document text
    • https://107a3552-ed21-4f5d-95e3-510b6eae4444.filesusr.com/ugd/21bbef_8817f58c56a04837993d8f19c34f7964.pdf?index=trueIn PDF document text
    • https://ce83042b-5faf-46b5-bcbb-9b4d05ec7d33.filesusr.com/ugd/a31856_1ef2bab1e4eb4b3f91394f503200bfe3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gapivegek/luwurel.pdfIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_b5c34661cef84c67b042ddeb7af780ea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wifukedot/99250231889.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/tecnicas_de_redaccion_escrita.pdfIn PDF document text
    • https://ac09d6fb-20d1-47e2-97cb-2568fc137cdf.filesusr.com/ugd/03dcd4_e0a0fa2081a74b239709521d78465e5f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefodek/puviboxisov.pdfIn PDF document text
    • https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_a9039318843c4c3897ba0261fc8d334a.pdf?index=trueIn PDF document text
    • https://4cf2acc4-d143-4013-a78d-f21de0873c4f.filesusr.com/ugd/e4636f_90804e39b42b4f6cb47a30133dd2b89e.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_off0000ff95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF95 5232 bytes
SHA-256: e961bbdb03a21b5e3bb8aa13dcfcf6599eff7829b9fd4ade71ac26e2ef6bb0e8
font_01_sfnt_off0001115b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1115B 10756 bytes
SHA-256: 7a598ab73bfc4ae2b407f68715ae9cffe1c3d2fba4b5b35ca9d802787e796c9a

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