Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ff2cad3c98af35…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 05:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d5575a8bd52476c0f484d51ccc40ce SHA-1: bda325ab014a4ffbec6ce42815208df66103a5d6 SHA-256: e0ff2cad3c98af35aae567d384531a225ead6e065dce5a25847bfe39a96d1d62
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, creating a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to lure users with search terms like 'bluestacks android emulator ios'. This suggests a phishing or scam attempt to redirect users to malicious 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.cc/pify?keyword=bluestacks+android+emulator+ios
    • http://lufidive.justritemarineinc.com/uploads/1/3/0/7/130775413/nimuzikiji.pdf
    • http://files.chiminisiberians.com/uploads/1/3/1/8/131871912/3723905.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/31451879434.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/88060234800.pdf
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/35616002241.pdf
    • https://cdn.shopify.com/s/files/1/0450/2568/9758/files/a_woman_of_substance_barbara_taylor_bradford_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/vodepawanobenakubezadi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/30148074114.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/98954860226.pdf
    • https://cdn.shopify.com/s/files/1/0432/6221/4304/files/58222197795.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/sigebis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4791/9522/files/gukofuludomixun.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/xuram.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/latest_ugandan_love_songs.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_off00007173.bin
1f196f9b48f28d60ea94758e18299bba218ad280936aa9732b18aa8abcfa50b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7173 5200 bytes
font_01_sfnt_off000082fe.bin
8c1b4c769792c3d6fc2ed0b7484c498d8baf4af4011d7e2f821265d089f531ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82FE 9868 bytes

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