Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46e30e886e1758a…

MALICIOUS

PDF

45.3 KB Created: 2020-07-29 09:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5facc8b73b698b23d26215316121a9b7 SHA-1: e67087d1bc7f927b4682d72bddab9ce6af37ff34 SHA-256: d46e30e886e1758a97ca267e68d024c0cd3530436a270e6b79207abafa553124
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a PDF link farm. One of the primary links redirects to a known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'plain background images for photoshop free', indicating a social engineering attempt to trick users into clicking malicious 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=plain+background+images+for+photoshop+free
    • http://files.ahimsaveganliving.com/uploads/1/3/0/8/130814492/figegatogore_wisufosozi_gixudawozelaki_felezok.pdf
    • http://files.montanagovcup.com/uploads/1/3/1/4/131483249/papipixoz.pdf
    • http://files.rootsthatrundeep.net/uploads/1/3/1/8/131858975/9536933.pdf
    • http://files.sallysharpe.net/uploads/1/3/1/8/131856050/7199513.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/merujowipopibipinoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/81941256218.pdf
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/fadimuju.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9122/files/50625453131.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40429789840.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/15621578997.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/74464195196.pdf
    • https://cdn.shopify.com/s/files/1/0432/2023/8503/files/48084666706.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/zuzitizufowoketipisulujim.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_off000069c2.bin
00e6fa553422b7e20548922d32f534d1ddd09d4eec090bc535560d547a9f6597		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C2 5656 bytes
font_01_sfnt_off00007cc0.bin
fb80a30e0383eb31fdf1f9d7ded233ac015558c70038681679254edad126c9a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC0 14192 bytes

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