Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e75fb0d03918ab7…

MALICIOUS

PDF

88.1 KB Created: 2021-03-17 20:27:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 010dabe933bd1f9952d47a4c91930016 SHA-1: 21155fb5e95b50ee0e5824423f39c24a7f30d2c2 SHA-256: 2e75fb0d03918ab7354ca276ab8497412531fb61c44c7e7867ffa027fd142350
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://botokaw.ru/award?keyword=june+barcarolle+tchaikovsky+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384150/normal_60135f1f4b51d.pdfIn PDF document text
    • http://radanews.site/angioedema_guidelinespes8b.pdfIn PDF document text
    • http://mosdendy.store/what_are_the_qualities_of_good_sportsmanshipvablc.pdfIn PDF document text
    • http://reduslimer.website/ejercicios_probabilidad_totalpc5kk.pdfIn PDF document text
    • http://uscreditcheck.info/how_to_setup_bose_remote_to_control_tv64jmp.pdfIn PDF document text
    • http://suvuxivenorum.mypressonline.com/anomia_social.pdfIn PDF document text
    • http://texifudosino.mygamesonline.org/droit_de_l_urbanisme_au_maroc.pdfIn PDF document text
    • http://item-mask.top/hello_kitty_racing_adventuresv19tm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_6050ca3ba4630.pdfIn PDF document text
    • http://ginajazadunoxix.22web.org/35482864789.pdfIn PDF document text
    • http://wuzagabi.22web.org/90244506991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423148/normal_60366b53222c5.pdfIn PDF document text
    • http://wgathering.org/best_daily_devotions_for_dating_couples7wgu9.pdfIn PDF document text
    • http://rabota-plus.club/p3_international_kill_a_watt_ez_meteriidaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sorisavitekinuj.onlinewebshop.net/xemotakip.pdfIn PDF document text
    • https://7a69a04d-b0b3-478e-a927-895b34d3dd44.filesusr.com/ugd/159848_368508f8b02b4589b14e06c80ef337fa.pdf?index=trueIn PDF document text
    • https://89511c73-251b-4bee-a1a5-5f4bd4863124.filesusr.com/ugd/f24cb8_3e811adbe79444a3b20d3e40b219e12f.pdf?index=trueIn PDF document text
    • https://c36efdde-2309-4ce2-a10d-b6df2ce12cd8.filesusr.com/ugd/e98059_eb7c1e68fbc445d4945583595adbbb05.pdf?index=trueIn PDF document text
    • http://kurorasi.rf.gd/mesibijoxulafekule.pdfIn PDF document text
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_60d5c459e1cd4137afc290e6b356e93c.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C5 5596 bytes
SHA-256: ee0fc5bf2e55fe2ff0bd167c6917ff51046ed8cd545c86d62856e2fc5a0967a0
font_01_sfnt_off000106cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CB 22824 bytes
SHA-256: 0d171d1048f9e42eda4d02ba65721df2220911506b43849e9757800237e20e54
font_02_sfnt_off00013cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CD6 16268 bytes
SHA-256: 4418c535a1a49649c51649cd2c8588c12c772990926aff3accfca7b4ca5c65c8

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