Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f63cbb95f49f127…

MALICIOUS

PDF

44.8 KB Created: 2020-08-18 17:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a72feb6edada2de1cd6a26f09bf0f88 SHA-1: 4f0a26c0ff24f40cb4a40f2b6e2a96dd227743f6 SHA-256: 9f63cbb95f49f127b9534e58f89401ba916cd85e8a0c1abf4267ed6819825195
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 heuristic specifically identifying a malicious redirector. The document body, though partially corrupted, contains text related to 'elegant restaurant menu templates' and the malicious URL. This suggests a social engineering lure to trick users into visiting a potentially harmful site. The presence of a mass external PDF link farm further indicates a spam or SEO poisoning campaign.

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=elegant+restaurant+menu+templates
    • http://tisarot.stjohnlutherans.org/uploads/1/3/2/6/132681579/daxigedogor.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/75350187668.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5265/files/1104208753.pdf
    • https://cdn.shopify.com/s/files/1/0430/2081/2441/files/fivem_prop_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/6454/7741/files/dasepokamaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27588499931.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/womepuved.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9010/files/48692055584.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/girigasurifokove.pdf
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/4565149903.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/lajarefiguxujoki.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0119/files/waiting_for_godot_summary.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_off000072e6.bin
2cac94385c9c6d4b3d6326d712496b14e7d6c07492ed40192e821352a34f597c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E6 5096 bytes
font_01_sfnt_off0000842d.bin
b6789b125fec68c58b5ed8e881710abc56192bb4749148e6709383323b51171b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 10132 bytes

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