Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a97531cda8c4fe…

MALICIOUS

PDF

74.9 KB Created: 2021-03-25 18:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 068a430b89178b1189995d21a4449296 SHA-1: b1732f4be1eb4a125fafa52f2ec982eb90664b15 SHA-256: 58a97531cda8c4fe1f62965219bda08c4a5ba52feada978c09e26c11d536689e
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates a pattern common in business email compromise attacks, aiming to trick users into making fraudulent payments. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://ponafet.ru/wix?keyword=cryptocurrency+faucet+list PDF link annotation
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/4708936.pdfIn PDF document text
    • https://wobipogipexiwom.weebly.com/uploads/1/3/1/0/131070125/9742148.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/india_latest_news_today_in_hindi.pdfIn PDF document text
    • http://nutristrike-shop.ru/442890010031ub0n.pdfIn PDF document text
    • http://musomojil.mywebcommunity.org/gosenutatozanipij.pdfIn PDF document text
    • http://russianstravel.ru/738001786gjw6m.pdfIn PDF document text
    • http://futup.ru/clasificacion_de_las_cuentas_de_orden_en_contabilidadkwslg.pdfIn PDF document text
    • http://proba7.xyz/toshiba_blu_ray_playero3lff.pdfIn PDF document text
    • http://adminhalil.com/gesedewatodefixawejer7ala.pdfIn PDF document text
    • https://taxezuwijukiwum.weebly.com/uploads/1/3/1/6/131606901/4571851.pdfIn PDF document text
    • http://fito4ka.xyz/human_anatomy_pro_apk_free8ts72.pdfIn PDF document text
    • http://gutprod.xyz/why_do_arguments_happen_in_a_relationshipxy6zj.pdfIn PDF document text
    • http://jakufodunod.getenjoyment.net/lower_back_exercise.pdfIn PDF document text
    • https://rekepepijo.weebly.com/uploads/1/3/4/0/134018016/3466836.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a7563df4-ba19-4d82-a8a0-b2470d957038.filesusr.com/ugd/61f964_42f8ff53233f4e889eac67370cf4dffb.pdf?index=trueIn PDF document text
    • https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_868fb27805f04803a317e1e898f70280.pdf?index=trueIn PDF document text
    • https://69df74eb-9f83-488d-97bb-abb55063df61.filesusr.com/ugd/f34323_8cd77ed401154584b7cb023e1f814d67.pdf?index=trueIn PDF document text
    • https://c546c886-5aa5-41cc-813f-4ed3e146772c.filesusr.com/ugd/b3e52d_929777eae9564076ba3ece84c462d66a.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_off0000e623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE623 5016 bytes
SHA-256: b8319ba38cc33eda531ecd4fad5ba77964444ec446e1868a64ce6599bc4e3ea3
font_01_sfnt_off0000f74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74C 10904 bytes
SHA-256: 2d0bb6e4afd0fdc5af0e466eb001f1aee508c6d033b2f0b70c089aee930db032

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