Malicious PDF — malware analysis report

Static analysis result for SHA-256 444574faeec15214…

MALICIOUS

PDF

32.1 KB Created: 2020-08-06 18:19:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e08933132c7115e74ee86a53bb961b SHA-1: 1805e0680cd6a3b33dad6120312387f332ef828b SHA-256: 444574faeec152146ca611c8700735780d50b64e8d2436b02163a6196b7c1fb9
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This URL is embedded within the document body, disguised as a link to download actuarial mathematics content. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing site or a malware download page.

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=actuarial+mathematics+bowers+pdf+free+download
    • http://files.opunakesurflifesaving.com/uploads/1/3/0/8/130814513/gezitowejukejekojuko.pdf
    • http://files.christfirstjamestown.org/uploads/1/3/0/7/130739459/zapupi-semepuve-finawalo-sobagesununeli.pdf
    • http://files.ihellary.com/uploads/1/3/1/4/131484133/1cca666b475.pdf
    • http://nuduleg.jordanjaffe.com/uploads/1/3/0/8/130874431/d92844ee58b58a.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2214/files/7606511941.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/megoxidojixugapilanaseg.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/forubativ.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/zoriwaroretovod.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/douglas_adams.pdf
    • https://cdn.shopify.com/s/files/1/0431/6413/9669/files/zulagi.pdf
    • https://cdn.shopify.com/s/files/1/0447/3962/5111/files/beam_bending_moment_formula.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/jewadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/82399117624.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/11100610933.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/tesowigifaz.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_off000042fa.bin
69d42004513f5dd00abdc7bac06d640232e70a4d4059abfaceba83b8dc8a4334		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42FA 5616 bytes
font_01_sfnt_off000055f4.bin
53b0b495d4bd01101979bc5ac4cea610e61613acacf95263990e55404c75fc74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F4 8668 bytes

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