Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf576d136901f63…

MALICIOUS

PDF

44.9 KB Created: 2020-08-25 08:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 878c91877641d3ca6554cf3079c0df26 SHA-1: 156f3244902088e9fd77398a1ebd3c7208d6bec3 SHA-256: dcf576d136901f633c61a1051704fd9f26bb303a5caee2f46211d5a535fcf2f7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Dstv supersport tv guide today' and the malicious URL, suggesting a lure. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which host benign content, likely to improve SEO and mask malicious activity. The primary malicious IOC is the redirector URL.

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=dstv+supersport+tv+guide+today
    • http://xagujemek.cathhannon4pcc.com/uploads/1/3/0/8/130874218/wuganimawu.pdf
    • http://fedofo.cgsparish.org/uploads/1/3/1/6/131637136/9fc6873.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/vevibidovidazinerorir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7605/8274/files/importance_of_after_sales_service_to_customers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/98740887300.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/kabilofuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/2270/2999/files/nevemi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1480/6937/files/mitotabidedowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/lagovelibi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/goguwijaselizomoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/62174321137.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_off0000567f.bin
6ef394c82e52fc1bdfad11a0ea7a485e6c0614b976ebab837e0cac883ac7886a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567F 5032 bytes
font_01_sfnt_off000067c7.bin
b2f2b758dce45055e13a65602697f812d307f0059419de2bc9acce4a3b17332c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C7 15104 bytes
font_02_sfnt_off0000968e.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x968E 4324 bytes

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