Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d075b40870ee9b…

MALICIOUS

PDF

87.6 KB Created: 2021-04-15 09:32:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7c16555f1e80eb8c063096cb748087db SHA-1: ace988ebafe8495f64f0b2dbca0f4854c20cf25d SHA-256: 18d075b40870ee9be860afc2c25659067352b13169475e9b1a1b40a49e9ddb66
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 0.9993

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://dugedepap.ru/strik?utm_term=advantages+of+running+your+own+business+essay PDF link annotation
    • http://sevoxotedeki.medianewsonline.com/46333543075.pdfIn PDF document text
    • http://procripton.com/guvilewajatppk8q.pdfIn PDF document text
    • http://tudetiva.iblogger.org/apa_annotated_bibliography_example.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389074/normal_5ff289faa83ba.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/ijgg8hd/frederick_douglass_learning_to_read_and_write_questions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500677/normal_60134eb2a0fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450048/normal_601f9c9ddb7dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_60107acdb28de.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/zupeludakuzopipufude.pdfIn PDF document text
    • https://cdn.sqhk.co/falugojafat/igPijig/shogun_restaurant_pasadena_california.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/c3Ohi4o/sigesu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408170/normal_5fcd5f644ffdf.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/tisudadukaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480585/normal_602c2af61f94e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373004/normal_5ffc4bbc3918d.pdfIn PDF document text
    • http://lakaxof.iblogger.org/66008703849.pdfIn PDF document text
    • http://raifaisentgo.online/kenmore_water_softener_troubleshootingwgia8.pdfIn PDF document text
    • http://solapp.xyz/37748691289pxe04.pdfIn PDF document text
    • http://beliyden.xyz/kogetatogutapapanixccv4t.pdfIn PDF document text
    • http://mirror-x.org/download_log_table_base_10ru3uo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476150/normal_5fe57752a55d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456122/normal_5fe6f7d819331.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gotabuwane.epizy.com/vefosuw.pdfIn PDF document text
    • http://xamudakosenezi.rf.gd/padma_purana_gita_press.pdfIn PDF document text
    • http://marakolin.epizy.com/brooklyn_movie_script.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

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_off0001152a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152A 5428 bytes
SHA-256: af3419b6ab0e6b0396d5bcb4e9e40158385f0369092efb0032f14a3d91629df0
font_01_sfnt_off000127ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127CE 12016 bytes
SHA-256: b0f40c91151fcfe376392a9261e46120fea6348df88a57e74ee69a473c9519e4

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