Malicious PDF — malware analysis report

Static analysis result for SHA-256 e73bed9d369a1447…

MALICIOUS

PDF

78.2 KB Created: 2021-03-20 03:23:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0cde2fe1535addf1847217c8ccf224b1 SHA-1: 60ab57a5ad72bc227d2e9bfaeeefff875896fcd1 SHA-256: e73bed9d369a144719992790f91a1a000a07d73cf58a6539350a87794f407a39
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one specifically pointing to a suspicious URL related to 'mlb the show 20 apk'. The 'PDF_SEO_LINK_FARM' heuristic indicates a mass of external links, and the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' firings strongly suggest malicious intent. The presence of embedded URLs and a download button lure further support a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/wix?keyword=mlb+the+show+20+apk PDF link annotation
    • http://wefilevazobakeb.mypressonline.com/46360171224.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/bomba_de_ariete_hidraulico_funcionamiento.pdfIn PDF document text
    • http://fevevafo.medianewsonline.com/38235942274.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/42542293350.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_76bb81165640461bb38951c463e26938.pdf?index=trueIn PDF document text
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_17e2bd6533ee4663b70cc9bb93c3e3d2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4757c35-6bd2-4910-81ce-04ca02f20bd9/in_a_decision_tree_algorithm_the_information_gain_measure_is_used_to_measure.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/duximezixijaneg.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/73051809986.pdfIn PDF document text
    • http://mozaninukokefef.onlinewebshop.net/foridofebujezulura.pdfIn PDF document text
    • https://fe92b815-f0fe-4223-924b-659339f44b90.filesusr.com/ugd/8f64fc_2f5667bde3fd461b8281613b34625f2e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca8ef2a-aa20-4862-82cd-ffd044fd6acf/65568993175.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/go_tell_it_on_the_mountain_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/gene_mutations_and_proteins_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72033e8-4b4f-41db-b6d4-a72afcb917b6/lizimetologulepibive.pdfIn PDF document text
    • http://mowumurukilada.rf.gd/geverugesolirujodalerewod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3197f678-0343-49c0-848f-3807146a3ffd/sununurifis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf71d5ae-4d74-4f0e-9926-c99539c9a1fc/90742434574.pdfIn PDF document text
    • http://didaduxazej.epizy.com/how_much_does_shoprite_pay_per_hour.pdfIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_d6118df3be36429fbd8209d3451948d6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zedudo/mariage_d_amour_richard_clayderman.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/juwufelizipeke.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_off0000f54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54F 5388 bytes
SHA-256: 4eb93e59f8e0cac6671adbfb433c1c677abfb960bf6a09f7e212837c897ef189
font_01_sfnt_off000107b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B8 10688 bytes
SHA-256: f55e75a0eaca9c4cbbb133e4fca6f31430951f1e24d4bff876a9e1950173f408

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