Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ded5489f6b042c3…

MALICIOUS

PDF

39.3 KB Created: 2020-08-15 01:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e3b8e03622d68fbd0c9f7990b405141 SHA-1: b9caa73702e77e5e69f7a016afec389e5252fad5 SHA-256: 7ded5489f6b042c3e753cf08ae8d406a2fbd4404c8629615425d570de5633e75
130 Risk Score

Malware Insights

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

The PDF contains a lure for a 'free fileminimizer picture' and embeds numerous links. One critical heuristic identified a PDF redirector link pointing to 'ttraff.ru', which is known malicious infrastructure. Another heuristic flagged the document as a PDF SEO link farm, indicating a large number of outbound links, many hosted on Shopify. The presence of a download button lure further supports a malicious intent to drive user interaction with these links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free++fileminimizer+picture
    • http://files.sarahmayphotographymn.com/uploads/1/3/0/8/130814126/kexowopomeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/zarigisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/56164101266.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/cambridge_igcse_ict_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/perkins_funeral_home_harlowton_mt.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2540/files/cbse_11th_class_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/24013029360.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/mazosasu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/domus.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/tewapurevame.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_off00005cdf.bin
2e26cd4a340992036880c565c31503ed34248964f511cdb86442c5739770e71a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDF 4776 bytes
font_01_sfnt_off00006d0c.bin
559f755563b97b3e3f9b1da8d15c3fd25db2d54ec8078a1ddab4b623365e8175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0C 10640 bytes

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