Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0dface5349f6e7…

MALICIOUS

PDF

32.1 KB Created: 2020-08-02 06:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95e9f0646219d165b3ea68548b5622dc SHA-1: 231aa196553cce7ff108861d03633dd5802e19ed SHA-256: cb0dface5349f6e760aa943a87179d7cc73c4cd392735cfcfbfe848eda63200e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. This indicates a link farm or redirection attack designed to lead users to malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=combine+youtube+videos, which is flagged as a malicious redirector.

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=combine+youtube+videos
    • http://files.needleartsonpaper.com/uploads/1/3/1/8/131856917/88e718f5.pdf
    • http://files.mysecondhandrose.com/uploads/1/3/0/8/130874347/2bf5b2c3.pdf
    • http://files.ennitolkki.com/uploads/1/3/1/4/131409909/2377429.pdf
    • https://cdn.shopify.com/s/files/1/0432/0559/1200/files/rewubuwapiba.pdf
    • https://cdn.shopify.com/s/files/1/0435/4719/7594/files/69775846666.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/disable_media_wmf_nv12_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/gta_vice_city_cheats_pc.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/zazoxalusulavapipawubal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/91691191317.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/instructions_not_included_netflix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/3486358526.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/fizabane.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/90125395637.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/81725562316.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_off00004284.bin
91242f721925af9c66f66c3e4674215b472f707173666e0dcd272a6a235ca458		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4284 4840 bytes
font_01_sfnt_off000052f1.bin
e197488a9aa7a573a767b9fcfd4356200160c1f7fed975e9bf8065845e33ae6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F1 9600 bytes

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