Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef8f72afedde36c…

MALICIOUS

PDF

54.1 KB Created: 2020-08-01 17:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 873dcb8083bd2896fe0834a82b46c51b SHA-1: d56f293f1ece163c4f7791ca5d5b1edb6961678b SHA-256: 9ef8f72afedde36cc212b2a2c9d431fe0b3893b3de59aee732047e7e898251bc
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=can+you+get+banned+off+discord', which is flagged as malicious. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning.

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.com/pify?keyword=can+you+get+banned+off+discord
    • http://files.kdhodges.com/uploads/1/3/2/7/132740321/5360778.pdf
    • http://files.somethingsoldsomethingsnew.com/uploads/1/3/1/4/131409333/relaxajuliso.pdf
    • http://files.dudleyfoundation.org/uploads/1/3/0/7/130775200/sekux.pdf
    • http://files.vtube-imc.com/uploads/1/3/1/3/131383953/8365f1c4d73cd9c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://cdn.shopify.com/s/files/1/0435/1292/2264/files/mirubukilireroso.pdf
    • https://cdn.shopify.com/s/files/1/0435/5221/1099/files/74109586312.pdf
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/19757345827.pdf
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/3653608300.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/12102629374.pdf
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/konudoxavivikojemuxajufoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/kill_all_node_processes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3335/3627/files/ranotepewuvilumosogu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/89431575294.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/57602252110.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0520/files/webiz.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_off00007fdc.bin
f41c49fd90576a265beb58d4a9ae1fc7ac6ef33f51f93890887440327011019f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDC 5304 bytes
font_01_sfnt_off00009200.bin
571658b7237c6a05d1a78f291bbae90f6de09fc5ae1ec9828e4da7725cfb7aac
pdf-font-stream PDF embedded font (sfnt) at offset 0x9200 10624 bytes
font_02_sfnt_off0000b67d.bin
313c3940a6f4aae92ceaa1b1a843de6e6f13411355a457aba6e018c383fce54c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB67D 16060 bytes