Malicious PDF — malware analysis report

Static analysis result for SHA-256 c386750998845af0…

MALICIOUS

PDF

35.6 KB Created: 2020-08-23 20:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a64626c974023f32d512a7c81a302597 SHA-1: 6037b139b4187d1bfa69a592259cd9093da4d1dd SHA-256: c386750998845af031e99d26a99caea229415b070ade2457452fb0c3d5d055cb
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a blood cancer report sample. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the document.

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.cc/pify?keyword=blood+cancer+report+sample
    • http://zemamedon.abundantmediacompany.com/uploads/1/3/1/3/131379615/6047798.pdf
    • http://files.westlakeffa.com/uploads/1/3/1/3/131383541/sarolunilip.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7846/files/zulolizejajupipafegadimij.pdf
    • https://cdn.shopify.com/s/files/1/0434/5105/6295/files/cambridge_pet_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/xabowu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/67666484676.pdf
    • https://cdn.shopify.com/s/files/1/0434/1579/7916/files/vijupefigonemuxafitexer.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/vonuletobodujagavag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0323/9835/files/18043856221.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/sims_3_cc_tumblr.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/pazatebaniwetaguf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/etika_menggunakan_media_sosial.pdf
    • https://cdn.shopify.com/s/files/1/0436/8151/3622/files/zofepawukutabafusizig.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_off00004e30.bin
3df4581e843b09daa0a1fa7e926da114eb952272727f2b171a6620d73fff71fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E30 5268 bytes
font_01_sfnt_off00005ff6.bin
0fcfd043aa7bc51ca9d9595a4aa9a9f6a8e11cae97e5db03e4d3a12d3ec1474f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6 9904 bytes

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