Malicious PDF — malware analysis report

Static analysis result for SHA-256 985ca7f04d6d94a4…

MALICIOUS

PDF

73.5 KB Created: 2021-03-15 22:38:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9852c04248ac7a90b17eb1371f5fe8c2 SHA-1: 12b406eff414b956606d19d7f9da7f1b197879f1 SHA-256: 985ca7f04d6d94a46f51302c6fe26fae7c0a2e13ee2df6d72a39dba6a43f5790
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 0.9997

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://fokemale.ru/wix?keyword=autel+al519+manual+espa%25C3%25B1ol+pdf PDF link annotation
    • http://italiahot.space/41936233300qta1q.pdfIn PDF document text
    • http://1eyvgo.xyz/the_quick_and_easy_way_to_effective_speaking_book_download1xze9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387703/normal_5fedd1322837e.pdfIn PDF document text
    • https://cdn.sqhk.co/dubibuwa/1ichjha/16371290959.pdfIn PDF document text
    • http://sreda.city/devotional_books_for_married_couplesfenlv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_600c0eed8d4c8.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/icic3ge/car_crash_townsville_ring_road.pdfIn PDF document text
    • http://makeyourself.xyz/52180478214twq53.pdfIn PDF document text
    • http://lighttravel-ng.com/41142230254dabka.pdfIn PDF document text
    • https://cdn.sqhk.co/dagosasojo/iggeFgV/football_championship_2022_world_cup_qualifier.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527747/normal_602974703cfdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404290/normal_6022bbbf1e561.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/ihgETig/clash_of_mythos_wiki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_604d1a4a58e8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501993/normal_5fc8cf4d135c9.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/66Khihg/movie_software_for_windows_free.pdfIn PDF document text
    • http://newberginvestmentproperty.com/naburoxatipe219sm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485165/normal_5ff5ff2a4b27d.pdfIn PDF document text
    • http://kurs1.xyz/fojakugapizunagugumibo3ftm6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_a6ea669c1a13430d8859cb497998a6f1.pdf?index=trueIn PDF document text
    • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_042c196e61164acbbaac8347b208e4a5.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_off0000dde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE4 5624 bytes
SHA-256: 0c8aa9b285da1456c93fe956424a39db8c5e59086992b78f6eb2784e4b068414
font_01_sfnt_off0000f0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C2 11784 bytes
SHA-256: ad69496f789a9cfc091c9918d7d640ca09e8c7eefdedf486618ee9902992e424

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