Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69f15cc545f64cd…

MALICIOUS

PDF

79.5 KB Created: 2021-05-02 00:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 419d4c463bd515c002cf9468d56a6d0c SHA-1: 5a5c0d8a9b86feea4d9ec090b09e0c756b927b3b SHA-256: c69f15cc545f64cd49f49fa3a31ebc423943eba9e830f9e2563d06a603083567
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL identified as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/strik?utm_term=ffbe+warrior+of+light+galuf+review PDF link annotation
    • http://wei-nmvc.com/lemejevukomapowigamzrwzl.pdfIn PDF document text
    • http://trickyturkey.com/what_is_a_metaphor_for_waterpopay.pdfIn PDF document text
    • http://nikaold.site/vumixevqime.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/taking_sides_clashing_views_in_sustainability.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/53751569221.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/7dd31d.pdfIn PDF document text
    • http://armlur.space/xusewsrai7.pdfIn PDF document text
    • http://help-business-media.com/vafegta1fm.pdfIn PDF document text
    • https://mixabukosi.weebly.com/uploads/1/3/4/4/134479433/4134675.pdfIn PDF document text
    • https://rirenumu.weebly.com/uploads/1/3/4/8/134884077/guzipolifeva.pdfIn PDF document text
    • https://buwupejobo.weebly.com/uploads/1/3/4/2/134265589/bf0f46416.pdfIn PDF document text
    • https://sunivisoxeban.weebly.com/uploads/1/3/4/4/134493344/fowatojitexig.pdfIn PDF document text
    • https://pobogovowot.weebly.com/uploads/1/3/5/3/135323888/tesujefawudubib.pdfIn PDF document text
    • http://jijejuvisuzewe.22web.org/93937312345.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ae1947-4ca4-461c-8199-4a51c54eec0e/ravet.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/lebele.pdfIn PDF document text
    • http://xizobofex.epizy.com/20082295449.pdfIn PDF document text
    • http://pudosuvosav.atwebpages.com/21524059375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc7e5124-645b-4ef8-a1b9-55b7e767c782/95926241198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f10ee7e-e179-4f88-afd1-22addd40ed4e/difference_between_machine_learning_ai_and_data_science.pdfIn PDF document text
    • http://kokasog.epizy.com/how_to_describe_tropical_rainforest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad2c38d5-6574-469f-9580-bfa7b4e65d46/femek.pdfIn PDF document text
    • http://vefodipox.myartsonline.com/85378369428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51420b17-6a19-40ec-809d-8cfc7855fcca/44372472651.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_off0000f802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF802 5096 bytes
SHA-256: fc9d4583c92079a39b19917cbdb6eeee7733c66c28e65b895658cab34270b832
font_01_sfnt_off00010974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10974 11368 bytes
SHA-256: db5ce8c364ab06a4661a23b145928f861c2d3ce9615ac7e8e0881bdb26ee6c0c

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