Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadbd1d0e2c90d70…

MALICIOUS

PDF

92.3 KB Created: 2021-03-22 03:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bd15862eb66c4bdc9ae22135ff975ea0 SHA-1: 8afa5ca5ba15adf25aae522233edf1e69528d6f1 SHA-256: eadbd1d0e2c90d70904b02cf79bf887ac86d51a7bf19d5eb966dc1146a662b88
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://dafemum.ru/award?keyword=surah+al+kahf+full+pdf+download PDF link annotation
    • http://discount50it.pro/79723278387k79h2.pdfIn PDF document text
    • http://zikapipumimapo.22web.org/tojipunefutub.pdfIn PDF document text
    • http://uaregroup.com/lejedujxmz.pdfIn PDF document text
    • http://wonder-ita.fun/jukamefamo3uxlw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446647/normal_600b551fc85ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_6050401dbc432.pdfIn PDF document text
    • http://laitlabs.pro/champion_resistance_band_exercise_guideup6f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_605483cec35fe.pdfIn PDF document text
    • http://sosyaltakipcipanelin.com/how_do_i_make_my_phone_a_remote_control4jap9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_6034f15dc647b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477877/normal_6057dfd65acba.pdfIn PDF document text
    • http://monongzhlh.space/21462807255r7nwv.pdfIn PDF document text
    • http://pravagims.net/jifolotimuzogizik0w8wy.pdfIn PDF document text
    • http://sexedate69.site/jasisixupibipinududiga42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476446/normal_5feb9c96b755f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikuvideposem.epizy.com/mivizinagelasedabitizamen.pdfIn PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_c8499586bda14c77a91acbff22b13ebd.pdf?index=trueIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_749ff5c296ef44c29c0785176d87c4ae.pdf?index=trueIn PDF document text
    • http://rokosarod.rf.gd/86089794779.pdfIn PDF document text
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_54355b3d75aa4d87ae80a731b5dbe52e.pdf?index=trueIn PDF document text
    • http://kotafonapajawut.epizy.com/dark_souls_3_mod_save_ps4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11821 5208 bytes
SHA-256: 946ef4ff57de2921681d99d1c45cf75c2383259a611fff56de04ba98a75071b3
font_01_sfnt_off000129e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E1 11012 bytes
SHA-256: 00da64578e47a447e94dd2b206f12dfa778efc6a02e8467881f09b71956eb6fb
font_02_sfnt_off00014e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E76 16172 bytes
SHA-256: 96e06106e3006553386fba87c243c4a28b622411f61b38071404873282de63a9

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