Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4a4eded58d6561…

MALICIOUS

PDF

80.9 KB Created: 2021-05-12 19:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 551bc444ca8bfb104a497180cc86d984 SHA-1: 27147e47974d8f7282261a7940785f3e459dd12f SHA-256: 9a4a4eded58d656111fdb5fbabd6eb8a0a3edafecf0a44db63718285269ab41f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous links to disposable domains, suggesting an attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://xezojetit.ru/strik?utm_term=singer+simple+sewing+machine+not+picking+up+bobbin+thread PDF link annotation
    • http://reawolt.online/13514898291gj641.pdfIn PDF document text
    • http://usmileofficial.site/789800613711ku0q.pdfIn PDF document text
    • https://dewokazivefin.weebly.com/uploads/1/3/1/4/131437233/bonakinesavisot.pdfIn PDF document text
    • http://bimizuzi.sportsontheweb.net/87461416068.pdfIn PDF document text
    • https://turetufifej.weebly.com/uploads/1/3/4/5/134500159/baxobomidu-gasupavumetux-kufazobej.pdfIn PDF document text
    • https://cdn.sqhk.co/lokabawopup/9Fhdfgj/koradepusadis.pdfIn PDF document text
    • http://kozugufasuroti.mygamesonline.org/cancer_de_cuello_uterino.pdfIn PDF document text
    • http://vitetiw.getenjoyment.net/analise_combinatoria_mundoedu.pdfIn PDF document text
    • https://cdn.sqhk.co/risejesob/jcI5hhC/break_bricks_balls_mod_apk.pdfIn PDF document text
    • https://zinenefubodejig.weebly.com/uploads/1/3/4/3/134338026/pubedewagadara_gewerumuvonar_dexopijonado.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/22937911136.pdfIn PDF document text
    • http://small-italy.space/4953023666546tes.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/LLBifgd/disney_app_samsung_tv_download.pdfIn PDF document text
    • http://jenuxijaf.mygamesonline.org/open_office_editor.pdfIn PDF document text
    • https://mokoxofedig.weebly.com/uploads/1/3/4/8/134891763/fokenerinete.pdfIn PDF document text
    • https://cdn.sqhk.co/wukopojenava/Q1RjhpG/90409456489.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/16742186810.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/how_to_remove_splat_hair_color_from_skin.pdfIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_63603f99aff44f6eb4e88c08e50b68fc.pdf?index=trueIn PDF document text
    • https://1f2f8e77-98df-4c5e-b88a-83bc2b612b58.filesusr.com/ugd/5c7528_e136f859cb274ee58345be30bf59c767.pdf?index=trueIn PDF document text
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_15b53198717a45d2a0a5c0856c1e9979.pdf?index=trueIn PDF document text
    • https://ac09d6fb-20d1-47e2-97cb-2568fc137cdf.filesusr.com/ugd/03dcd4_5bc75a5c24e44f0f9e96cf90a8a3f1a2.pdf?index=trueIn PDF document text
    • http://rabatelekovufar.myartsonline.com/sound_of_silence_sheet_music_free.pdfIn PDF document text
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_90e43ec4d8e94fbf8b266fd9f182938a.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_off0000fb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB73 5884 bytes
SHA-256: 6686aa6361d839b0da36d06d950e26c3543327c137bddc79a11db72861249999
font_01_sfnt_off00010f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F55 10728 bytes
SHA-256: 043ad494a3ca1f48638b49610a89239b4686a8ef9c04a2d9cbdf16dcaf0fa402

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