Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dad73be6ae29e7f…

MALICIOUS

PDF

76.3 KB Created: 2021-03-05 19:25:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: be2c9d9cf3928302f7cd889fccc470fd SHA-1: 9c7ac79b2c89bead6bfce91ca8160c5358a45687 SHA-256: 6dad73be6ae29e7f750326079b163c30b423dd9dcc0a987a0bd03c2e29698d66
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-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://lozipotod.ru/wix?keyword=libro+amor+loco+nunca+muere+pdf+gratis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372399/normal_601172fd994fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481062/normal_601dde0d0941d.pdfIn PDF document text
    • http://geleostone.online/92431631195elrn7.pdfIn PDF document text
    • http://websecurer.tech/jko_hipaa_training_pretest_answers4xtnn.pdfIn PDF document text
    • https://cdn.sqhk.co/zedawuzijis/gfhiLAT/kulesonate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488103/normal_6002ec83782e5.pdfIn PDF document text
    • http://imm-shoes2.club/13848425451g1arm.pdfIn PDF document text
    • https://cdn.sqhk.co/pawapoma/jcji8WK/jatowasalenonufelog.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/yoga_mudras_for_stress_relief.pdfIn PDF document text
    • http://testertumentum.space/73607124210s6bzm.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/KJAifgd/xbox_360_wireless_headset_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/nemalerute/e3hdjgy/noxigawikoroperujume.pdfIn PDF document text
    • http://itwomen.space/devi_atharvashirsha_telugu8ys5j.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vimixof.onlinewebshop.net/xinatubomadevuwugofikoga.pdfIn PDF document text
    • https://f9c380c0-3c9a-404e-8c76-a924832b335c.filesusr.com/ugd/9c8fb9_7c585f50da6b4c57899fb7925a63dc27.pdf?index=trueIn PDF document text
    • https://80c8fd16-4cf8-4f9f-b52b-d6c956df8f3b.filesusr.com/ugd/1a94e8_f012a713ef3c47ec963283e6bf031d5e.pdf?index=trueIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/how_to_cook_t_bone_steak_on_foreman_grill.pdfIn PDF document text
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_1165ac5db0d04b168770b923e2aa84e3.pdf?index=trueIn PDF document text
    • https://8d5bcf17-53f2-4f21-b585-7a27aef14131.filesusr.com/ugd/7baf93_0f41549827b64f479c7d7c4d4252f8f3.pdf?index=trueIn PDF document text
    • https://43fe4710-460a-4ad3-90dc-2dd795c51528.filesusr.com/ugd/a32c20_deedba39e4e74f0e80bfd02bf5d3dac3.pdf?index=trueIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_fdfdf8f40ef64ad6b42917e5d0e17e2d.pdf?index=trueIn PDF document text
    • https://b73db3ac-2e3c-475a-83ab-7f4668f00a8f.filesusr.com/ugd/80e8fa_a115053e12a248319bdc8c1c3af071d4.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99A 5556 bytes
SHA-256: 4099176a3ab56011b1af1acbb2b40c966425d0185c5b89d174b2af69d9da21ff
font_01_sfnt_off0000fc69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC69 11480 bytes
SHA-256: 9911e339032c122295b484ca529c63f0d2b038ac02b122e493c195bbb65f57aa

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