Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a031bd2be35e21d…

MALICIOUS

PDF

44.8 KB Created: 2020-08-17 01:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e8e514402c515fb8f3b9b3eb8291a25 SHA-1: aca476faf7c8535ed0d9965df6633d9338b58db1 SHA-256: 9a031bd2be35e21d8c80982a15b41015969fe20ec4b1849cd1ec020f77d1a01d
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains a call-to-action phrase and the same URL, suggesting a lure to download potentially malicious content. The presence of a large number of embedded links, many pointing to Shopify, indicates a link farm designed to improve search engine ranking for the malicious lure.

Heuristics 4

  • 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.
  • 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
  • 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.com/pify?keyword=gta+3+cheat+button+apk
    • http://files.creativesprouts.org/uploads/1/3/1/4/131482887/sadutojenefowub.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/search_engine_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/45896363722.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/dagelafulosanerifikade.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/48764320548.pdf
    • https://cdn.shopify.com/s/files/1/0440/7495/9000/files/nugumuxedixuvati.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/42234894846.pdf
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/anticancer_activity_of_nigella_sativa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/rekib.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/15352192935.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_off00007315.bin
c0a55073ef6cf220e575e2155fea665f8c3ac05f8285c14867cec7b7c51e97b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7315 5112 bytes
font_01_sfnt_off00008471.bin
25394616059a501a659dc0d79262c2a265c64244fc541de6a6f24483191eda98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8471 10060 bytes

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