Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4cdb70f20ac48b…

MALICIOUS

PDF

42.5 KB Created: 2020-09-10 02:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f9888ef9decaa5c0e573c7dd5a1202 SHA-1: 0d6f9289b48edfb6cf6794507d5e37a75d7b55ef SHA-256: ca4cdb70f20ac48b6ad1a66a40fe565e12adfbe38df4a6069a1a4067f1884c8b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=can+a+pdf+be+harmful'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf'. The document body, though partially corrupted, includes the title 'Can a pdf be harmful', reinforcing the deceptive nature of the content.

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.me/wix?keyword=can+a+pdf+be+harmful
    • http://files.susannaabeldesign.com/uploads/1/3/1/4/131408027/393b70.pdf
    • http://files.visionstepteam.org/uploads/1/3/0/8/130873728/3949604.pdf
    • http://files.mexpup.com/uploads/1/3/0/8/130815381/wugenafapon-denutepibijan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdf
    • https://cdn.shopify.com/s/files/1/0428/5041/8847/files/refikasatuvidugarupudobof.pdf
    • https://cdn.shopify.com/s/files/1/0431/9074/7293/files/xakivipegorisadoxizuj.pdf
    • https://cdn.shopify.com/s/files/1/0472/3091/0629/files/15484097724.pdf
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/nesatifo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/doguxotulopafifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/life_code_dr_phil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/80486740522.pdf
    • https://cdn.shopify.com/s/files/1/0437/7932/6110/files/veduj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/sigaxabediz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/81678370293.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_off00006918.bin
c9b8172b90c6a7515545f8a72bf1d206bbe83d47a995dd0cd37246a626ffcad6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6918 5148 bytes
font_01_sfnt_off00007a62.bin
ff016738a295542b323c3b34862c4b366e8460671ca5dc897c42e2361373732d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A62 9860 bytes

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