Malicious PDF — malware analysis report

Static analysis result for SHA-256 516484ef855d490c…

MALICIOUS

PDF

51.6 KB Created: 2020-08-04 03:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fd8e8ed5a4f0c30f636043fa91fa917 SHA-1: a2786e78fccccc0d0d0bd6e061f1cfe1570ebc40 SHA-256: 516484ef855d490cafeba82251a7386dc05e22d49ee5bb00ce6f1d9f65651675
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, many of which point to PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=bandaging+techniques+pdf'. The document body, though partially corrupted, also contains this URL, suggesting a lure to download further content or redirect to a malicious site. The presence of a link farm and a malicious redirector indicates a phishing or content-luring attack pattern.

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=bandaging+techniques+pdf
    • http://files.theskullzsalon.com/uploads/1/3/0/9/130970003/sokopagiji-tumapamutino-dakipabomizij.pdf
    • http://files.mbabechuk.com/uploads/1/3/2/8/132815388/tovokejizipesoki.pdf
    • http://files.thumbsuphorsemanship.com/uploads/1/3/1/3/131381546/zupotapefe_mexegurevovexew_bakitidi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/85565496800.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/67002121442.pdf
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/4747881174.pdf
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/11750094442.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/26924832913.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/fusionner_plusieurs_en_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/66319533695.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/sanoxuxugobozazaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/motezowujena.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/watch_secret_diaries_of_a_call_girl.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/95687300833.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/fallout_4_workshop_framework.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_off000085c2.bin
26260732d346237db7d60045ac7bfe38b5e1e0753dcd5473eb7d0b672657631d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85C2 5464 bytes
font_01_sfnt_off0000985b.bin
8604348ebea99b9dcbf1ae4997f7297bc947a51d31ae7085bd6cffc5fb7a328b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x985B 13012 bytes

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