Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee6d1e1c4e08bde…

MALICIOUS

PDF

69.8 KB Created: 2021-04-01 14:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f220152fbcc3ef73daa5581109457f5a SHA-1: 8b0c885b2ae4e13d7c6d4d7e0c5ab5363710b35a SHA-256: 4ee6d1e1c4e08bde0f4c2996fec982c136be23a0ee11fe3e3e0462844713db10
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://botokaw.ru/wix?keyword=mass+mayhem+unblocked PDF link annotation
    • https://wotawodakel.weebly.com/uploads/1/3/5/3/135316359/pimewasuko-mejezexukozutev-fopamosirabirol-guwivonev.pdfIn PDF document text
    • https://nenatuver.weebly.com/uploads/1/3/4/0/134017756/247169.pdfIn PDF document text
    • https://pitajuzijos.weebly.com/uploads/1/3/4/8/134885257/garemoxivef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448556/normal_5fd763e21ee94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382631/normal_60281a7d6d39a.pdfIn PDF document text
    • https://sedugewevazan.weebly.com/uploads/1/3/4/2/134234752/rumemetixolejijefu.pdfIn PDF document text
    • https://fezivalolir.weebly.com/uploads/1/3/4/4/134461714/3728552.pdfIn PDF document text
    • http://meroxisawifagu.mygamesonline.org/91043587888.pdfIn PDF document text
    • https://pakilimog.weebly.com/uploads/1/3/4/3/134363837/357fdcc0a1.pdfIn PDF document text
    • https://cdn.sqhk.co/pewesopefim/fiiia7a/vatosaguzowozewugadota.pdfIn PDF document text
    • http://phtech.site/genie_model_7055_door_wont_openwk6ba.pdfIn PDF document text
    • https://dikarofojosej.weebly.com/uploads/1/3/3/9/133988548/rasofo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427274/normal_5fdf600a1aa7a.pdfIn PDF document text
    • https://cdn.sqhk.co/kisunika/5hgv0gf/pibosezutalubu.pdfIn PDF document text
    • http://wrinklestiltskin.com/16_gauge_perforated_stainless_steel_sheetiri9o.pdfIn PDF document text
    • https://xuduwenonotowud.weebly.com/uploads/1/3/1/3/131379268/ravunemupado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_60226198338ae.pdfIn PDF document text
    • https://jividakole.weebly.com/uploads/1/3/6/0/136090299/zoxuju-gifowano-zaxadazu-jemasuvogeti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://valupakukav.myartsonline.com/19150488798.pdfIn PDF document text
    • http://gumizaxewa.atwebpages.com/renegazej.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/can_you_flat_tow_a_dodge_durango_2018.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/xipovu.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_off0000d552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD552 5396 bytes
SHA-256: c5390f8f473fea9a3b53321a4afc71688b649c0532bc7c08f3e0bef21980f50a
font_01_sfnt_off0000e796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE796 10224 bytes
SHA-256: 6ab94088b0251c57fb071b0953c63c8349c8c1dfb7ceb96dc1106d193c6482f8

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