Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e630a0f5551eb1a…

MALICIOUS

PDF

73.4 KB Created: 2020-09-16 19:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 017a1de28354082ea3c2f31380dc48fc SHA-1: 65331273f80ed59b9ea0feb6139fc0f9fc664be1 SHA-256: 9e630a0f5551eb1ab6261e034e606870b3a9795a599f7603b37857ed0180f208
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a phishing or scam attempt, likely to lead the user to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.me/wix?keyword=agile+weapon+enchantment+pathfinder
    • http://tanomusar.ronleachsoapstone.com/uploads/1/3/1/3/131379741/bademe_tuwigumeguweg_subusovu_lagop.pdf
    • http://files.tulsaboilerroom.com/uploads/1/3/2/7/132712120/zopajimataxatu.pdf
    • http://files.ynotphoto.com/uploads/1/3/1/4/131453636/459f662c.pdf
    • http://sojixedu.jenniferstuerzl.com.au/uploads/1/3/0/7/130775448/1371160.pdf
    • http://mavuw.ahistoryofno.com/uploads/1/3/1/4/131406749/8480891.pdf
    • http://wumitu.girlssocialmediaproject.com/uploads/1/3/1/6/131606343/rifazusuvemakowubo.pdf
    • http://files.mandalaband.net/uploads/1/3/1/3/131381721/0089da15e6.pdf
    • http://files.birdhouserow.com/uploads/1/3/0/7/130775970/17a9b738c76e995.pdf
    • http://pilexoxa.avemariagrotto.com/uploads/1/3/2/6/132681218/75b01431bd66.pdf
    • https://288f68ad-81b7-4b5e-8769-ec278c87f0cf.filesusr.com/ugd/5c8b2f_882c632e82c24f0197cde1b07d19cea7.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/9107/4976/files/improvement_of_bearing_capacity_of_sandy_soil_by_grouting_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/nike_tracksuit_size_guide_uk.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/tazidi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc2e.bin
73aef338f0c06d464f75fae3ed8c911bd1f3b24a31659d582d8aba85451110ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2E 5472 bytes
font_01_sfnt_off0000eeb8.bin
87e1bec1110a52ad26b4200c141157fd4ceaa6afd94c19785b419b3f77e486cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB8 12944 bytes

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