Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d6fae1abbab14d…

MALICIOUS

PDF

74.7 KB Created: 2021-03-20 11:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7a0115223b933d86b901d1aa3c6c2b92 SHA-1: 99f35605be6f05f6ac24c434f276e005a63d773b SHA-256: c2d6fae1abbab14dfa45841700416d04e04ef76194ed3fe3d1d8cb42ae46a865
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://bologen.ru/wix?keyword=taotronics+warm+%2526+cool+mist+humidifier+manual PDF link annotation
    • https://cdn.sqhk.co/sepagumal/hj5gcu0/light_mineral_oil_walmart_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_602370304624c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500692/normal_6012639d263a1.pdfIn PDF document text
    • https://cdn.sqhk.co/roweziwamu/gehbiiX/27039371876.pdfIn PDF document text
    • http://tdsevsvet.ru/sims_3_store_child_hairf819i.pdfIn PDF document text
    • http://seamanygau.best/vipizuveguxexaso2ti06.pdfIn PDF document text
    • http://cancandance.org/manual_maquina_de_coser_singer_modelo_9669ea45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445324/normal_6023eb775c587.pdfIn PDF document text
    • https://cdn.sqhk.co/luvuxokam/iTjdb3w/kajokavoxaroje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411681/normal_5ff5d1b267b26.pdfIn PDF document text
    • http://jijufik.22web.org/pupobidivodokozusom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_6029dfd026df0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486368/normal_5fefb8c094726.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_e8e128fecd6c43e5ad1e6540482d0273.pdf?index=trueIn PDF document text
    • http://mewumajobivu.epizy.com/4367414094.pdfIn PDF document text
    • http://daforewepon.epizy.com/model_by_laws_nsw.pdfIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_fb12cf5fe6774b6fb38e5eee0957a5c1.pdf?index=trueIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_0627e4ff539f4dbcb143e60793860e5c.pdf?index=trueIn PDF document text
    • http://wozaxanakix.epizy.com/32297582699.pdfIn PDF document text
    • https://ee42ee57-4547-4a8c-8a66-6cccb7f6869d.filesusr.com/ugd/2a9ad2_362a672485004476b4036656206bdd89.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_off0000e732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE732 4956 bytes
SHA-256: 578c512cc8b858881bada28cf2a151a21dc7dd9114c6c4d9d6d4297112962b05
font_01_sfnt_off0000f807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF807 11164 bytes
SHA-256: 28ecd1e9414949f262b18b3fbba97eaa8d9afa976e24123a78f612725025c7a5

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