Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba66a2c2070a4f9…

MALICIOUS

PDF

75.1 KB Created: 2020-11-16 22:32:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e30fa5f2ab277a653a4bdd413569f4d5 SHA-1: d03a364f550863a5879b636c87c7b4e003ee3a54 SHA-256: fba66a2c2070a4f93c79983b0e82c3cba08600e3382d93f0c4d1495247274df8
254 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document's content is designed to trick users into believing there are changes to payment or banking instructions. The presence of numerous PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://traffmen.ru/strik?utm_term=adulthideout+pin+number In PDF document text
    • https://metozalolak.weebly.com/uploads/1/3/4/6/134610510/f5d579800d163.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f91985b6bfc2.pdfIn PDF document text
    • https://manadazalivufud.weebly.com/uploads/1/3/4/3/134358645/vopivij-gigak-nibaviduti.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/xurejetexu.pdfIn PDF document text
    • https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/4492772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369632/normal_5fa6886602286.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/normal_5fa9125d85043.pdfIn PDF document text
    • https://fujimerikav.weebly.com/uploads/1/3/4/3/134307110/626016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/71afc0bd-aa8b-4414-a826-03109cf9f05f/american_popular_music_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/089b2924-b26d-4ffc-96de-9c172eea95d6/2193462350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ad2a172-3860-412a-962b-c66229071a1b/44343804589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de1dc2f2-8bfe-4104-ac39-49e2552f67d6/jekalelutipoxududomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4220986f-779a-47c7-91c1-b18d8ca0ad31/53849889402.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC7 4824 bytes
SHA-256: b63e499f875396f30e2778e5d781d1467d23d479aa7c85ed2657e242b9ea8865
font_01_sfnt_off0000eae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE3 11268 bytes
SHA-256: 0cae88f97d4d5ec7ec268df35ce42fe39d8267a00dd2f49d7785638f5c2bc635
font_02_sfnt_off00011147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11147 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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