Malicious PDF — malware analysis report

Static analysis result for SHA-256 421f5b119d2f71ae…

MALICIOUS

PDF

76.2 KB Created: 2021-04-05 15:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ced87c660f8f4b4cc6cea2f962c24003 SHA-1: 56bbe5e462b108054ef6afe3b0757f4410137d51 SHA-256: 421f5b119d2f71aea30b3c5a18fcc4512ec1278e378d2badb0bd76995d2e57f3
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://midufefew.ru/strik?utm_term=how+to+get+license+for+eyelash+extensions+in+california PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468255/normal_6011651100260.pdfIn PDF document text
    • http://burutevopu.iblogger.org/kobamabejut.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/dexaviguv-sexafig-sujoxavitubus.pdfIn PDF document text
    • https://patijunig.weebly.com/uploads/1/3/0/9/130969449/jilezufebarasijalol.pdfIn PDF document text
    • https://cdn.sqhk.co/zifakepavax/kvSIsxb/93740012116.pdfIn PDF document text
    • https://cdn.sqhk.co/jawefujivi/gHigoAO/53929172557.pdfIn PDF document text
    • http://bokugezus.66ghz.com/luretolalezavirati.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/1676347.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/IMciehi/fibakabakegodorudagurax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462678/normal_6004a103e13f3.pdfIn PDF document text
    • https://sozuxope.weebly.com/uploads/1/3/4/8/134873608/b7a47e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_2c29129dc91a4f55a41d9e5836266b03.pdf?index=trueIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_ac140ac303c84304939ac2352b11960c.pdf?index=trueIn PDF document text
    • http://tuzotulerijenej.rf.gd/le_rapprochement_bancaire.pdfIn PDF document text
    • http://dewutawezidu.rf.gd/adobe_premiere_pro_download_for_windows_10_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/596845f0-6b66-4383-8b8d-18563843ff92/22242047196.pdfIn PDF document text
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_3aafe8c84c17472f816144477f6d3fdd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/89024336-185c-44ff-8b26-36b3a07a261d/23920598634.pdfIn PDF document text
    • http://wupeguliv.epizy.com/the_hunger_games_2_full_movie_download_in_hindi_720p.pdfIn PDF document text
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_18d5cb91ebaf4dbf80ddbe1a9d0cedd5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/db023f03-eaca-4ac0-ab95-9c51199a3975/how_much_is_1_lb_sweet_potato.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA51 5364 bytes
SHA-256: 4c37eb6425f3da57ab138f74de3e84db602faaec3a2e46853c9eb6146c6bfff8
font_01_sfnt_off0000fcaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAF 11308 bytes
SHA-256: 4e42309c16d9af13cb06865e2e6a3aa699e6fae15507142863240c270367abcd

Open this report in the interactive analyzer, or submit your own file for analysis.