Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd9cda98368a175…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 18:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa592372e9bff24fdb4aaf3a8d21f84 SHA-1: a97d5b125e1bd97a1bf01d6987e016f15b52f10a SHA-256: ffd9cda98368a1757f552d94394dd7cf22b72eb9ab5ebdec5c1ff7d299f3d026
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate that this is a PDF link farm, likely intended to manipulate search engine results or redirect users to malicious content. The document body itself is largely unreadable, but the presence of the malicious URL and the link farm structure strongly suggest a malicious intent, possibly for SEO poisoning or phishing.

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=happy+wedding+anniversary+images+hd
    • http://kipana.1stfighterassociation.com/uploads/1/3/1/0/131070374/2393289.pdf
    • http://files.labradorpuppyforsale.com/uploads/1/3/0/7/130739718/modixujalin.pdf
    • http://files.mahoganydrug.com/uploads/1/3/1/4/131453989/wikozinulugafit.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/vigabotipafulu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5465/2822/files/22978149706.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/anabolic_running.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/alicia_keys_new_york_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/79613944551.pdf
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/bemikexamasudavo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/65684553740.pdf
    • https://cdn.shopify.com/s/files/1/0450/4079/5806/files/geological_time_scale_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/xijadasivubapivizom.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/67082442273.pdf
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/38190087182.pdf
    • https://cdn.shopify.com/s/files/1/0433/5140/8799/files/wasawotubi.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_off00004e9a.bin
60843b4f547f41d9ceed91625f5fb6cd84403043aebfccd3fc8aedef1d42ed65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9A 5556 bytes
font_01_sfnt_off0000616a.bin
bd7485b427d63107393d7cd693e3122ac3beb89656cc125ab9c50888cd8b6073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x616A 13664 bytes
font_02_sfnt_off00008c5a.bin
c325285fd24ede606519ec2bf293b37faacdea5ca360d119b6b5922fa8fcd725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5A 5028 bytes

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