Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb646fc6ea9208d…

MALICIOUS

PDF

54.4 KB Created: 2020-08-04 09:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d4e3bdcb850d6b55931e11fbf8395f3 SHA-1: bb62c7ce9d6b407190f44a6ae10f1ab1e0c79596 SHA-256: feb646fc6ea9208ddb3acef8dc520311d030d20b5025c5f20209aef5501fb2c1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'medication administration' and the malicious URL, suggesting a lure for phishing or a scam. The presence of multiple Shopify links indicates a link farm strategy to obscure the final malicious destination.

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.ru/pify?keyword=medication+administration+through+enteral+feeding+tubes+pdf
    • http://files.sunshinestudiosonline.com/uploads/1/3/0/7/130776407/ziseg-dukafuduzesopa.pdf
    • http://files.renewyourminddaily.com/uploads/1/3/1/3/131380128/8965241.pdf
    • http://files.ziaholly.com/uploads/1/3/0/8/130814531/renasabiwibox.pdf
    • http://files.siltsockinstall.net/uploads/1/3/1/6/131606876/kamerawibodepuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/13480453305.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/madelokijev.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/duzixerazomovirosu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/zumexawufaginugafifavopaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/top_remixes_2015.pdf
    • https://cdn.shopify.com/s/files/1/0434/7147/0742/files/49637706094.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/85051562590.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/filifofumulexikalexos.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/bruno_mars_zip.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/rename_file_unix.pdf
    • https://cdn.shopify.com/s/files/1/0435/1492/1112/files/rukuvoditawulunitama.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_off00009533.bin
4d8216ca7b0239f572ce6972e41f0efc3dbbd5baf54ed81d70231d43e022ca41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9533 5716 bytes
font_01_sfnt_off0000a880.bin
ae0cdb6b79dc95419e61b8f4aded3c0ef1ac8a845eab543db8d30bd4c3524852		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA880 10376 bytes

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