Malicious PDF — malware analysis report

Static analysis result for SHA-256 204734aeff1c6ca2…

MALICIOUS

PDF

41.2 KB Created: 2020-08-06 11:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81b1c3193531451f3b8f2aba61173771 SHA-1: 9ddae483321a0ebe5b365b4553b7a6f19f34c076 SHA-256: 204734aeff1c6ca2fb0f52ba213f1a72bc9e91e253b20cc8eeaa67844220f07f
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a redirect to ttraff.ru, indicating a malicious intent. The presence of a 'download button' lure further supports the malicious nature of the document, aiming to trick users into downloading further malware.

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.ru/pify?keyword=rajasthan+patrika+bikaner+pdf+download+today
    • http://files.hertruthinwords.com/uploads/1/3/1/3/131379578/6878728.pdf
    • http://files.cobramlawntennis.com/uploads/1/3/2/6/132681281/a9cfcc723307.pdf
    • http://files.breathewithlauren.com/uploads/1/3/1/4/131437351/424db3.pdf
    • http://vujag.op-com.co.uk/uploads/1/3/0/8/130874050/luxukafamejujub.pdf
    • http://files.jehphotography.net/uploads/1/3/2/8/132814906/8024579.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/wojilinogitewajanari.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9208/files/53923279452.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/war_the_cisco_kid.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/bms_system_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/7778/6018/files/2211812797.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/mokapodufigosilasirid.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/zetupafikuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1089/1682/files/magical_amigurumi_toys.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/archidoxes_magicae.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/cdpo_question_paper_2020.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_off00005792.bin
0a372646153d02175fd267505969440d78f78f2ee03f5d8569551db52ba00627
pdf-font-stream PDF embedded font (sfnt) at offset 0x5792 5608 bytes
font_01_sfnt_off00006aba.bin
7accf625aa33383e9a86f85a85e73fdb464afeb75c93d6794327963e77a905a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABA 14320 bytes