Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee12414577c21123…

MALICIOUS

PDF

87.7 KB Created: 2021-02-15 05:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 45a18358a920fb7ff6225804f1642c05 SHA-1: 560540955a436b7cb06c0dbaa50b22218b7f040c SHA-256: ee12414577c211230808594de91d9a39fc4a619f30056b51c1ea95aceaed2438
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many pointing to Weebly hosted files, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://jacksth.ru/wix?keyword=airbnb+nashville+guide+book PDF link annotation
    • https://gasovopur.weebly.com/uploads/1/3/1/4/131453365/02e634085a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_6009e5ae9d8ee.pdfIn PDF document text
    • https://devarewiwigunum.weebly.com/uploads/1/3/2/7/132710712/bdac9ad9edca.pdfIn PDF document text
    • http://tersq.fun/nebikavalenirokabokk5i1m.pdfIn PDF document text
    • https://tupetipu.weebly.com/uploads/1/3/4/4/134489263/3442365.pdfIn PDF document text
    • https://badexakabenal.weebly.com/uploads/1/3/4/0/134017850/guzezijoginevo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418191/normal_6018c6fa5d6d7.pdfIn PDF document text
    • http://momentshop.space/elder_scrolls_online_alchemy_sip_of_health1luo4.pdfIn PDF document text
    • https://golakabuzoved.weebly.com/uploads/1/3/4/8/134870140/4742997.pdfIn PDF document text
    • http://specialsale.info/akamai_netsession_interface_mac2xoqg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/jubomozexafoki.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/create_word_document_from_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/cydia_para_android_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/meri_bamani_song_free.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_off00011b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B45 5340 bytes
SHA-256: 9ac1511339c5f2dbf3e5f02008c27fadd91d01fb465c2e6a7aa630a27cbe5390
font_01_sfnt_off00012d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D70 10740 bytes
SHA-256: 497e3b646b883e5f4aa19a9050ffa3845cbac6e7eefcaccdc3587cfc6132c4f9

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