Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cae167e11cc8a78…

MALICIOUS

PDF

47.9 KB Created: 2020-08-21 00:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7944c25f71639c9a0dc4189951585d75 SHA-1: cdc44df863b0f78402902132f4ad69d5d6ad0375 SHA-256: 7cae167e11cc8a785ddb53659a7799a9a386347b53e5f3df55f092de29465744
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which likely serves as a gateway to further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent. The presence of many Shopify-hosted PDF links suggests an attempt to create a large, distributed link farm.

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=articles+a+an+the+pdf+worksheet
    • http://gurexarin.echoltdqc.com/uploads/1/3/2/6/132681670/b3620b2.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/bevotugitenugawed.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/consecuencias_del_sedentarismo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/28483059787.pdf
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/bopejatifopovafaveri.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/the_smallest_dragonboy.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/birds_photos.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/xiranojafoxor.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/41856565047.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28603075132.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0431/0617/3081/files/argala_stotram_marathi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006873.bin
ab503c2679e34613570ac4bfac1056b49cc3e2c8ef03fe6f89ec09c0153159ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6873 5176 bytes
font_01_sfnt_off00007a0a.bin
d8b29a27b0919e0e29cf7e09033710e035d9794d3ca5c0c1b7acec779e23b6e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0A 13280 bytes
font_02_sfnt_off0000a4bf.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4BF 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.