Malicious PDF — malware analysis report

Static analysis result for SHA-256 221e7d9e78cd63c6…

MALICIOUS

PDF

44.3 KB Created: 2020-08-06 03:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5732be0a280b86f81e48eb0acd423d7c SHA-1: 2cefeef029d06fa6c2d09609633db8904b32b719 SHA-256: 221e7d9e78cd63c6f4bde13415cba077b620ced1b058b62f84817e72290d5bd1
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=descriptive+analysis+journal+pdf'. The presence of a visual download button lure further supports the malicious intent of redirecting users to potentially harmful content.

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.cc/pify?keyword=descriptive+analysis+journal+pdf
    • http://files.blacksburgmiddlelibrary.com/uploads/1/3/2/6/132682745/duxamisor_xivid.pdf
    • http://files.catgirljourney.com/uploads/1/3/1/3/131381607/losalaroburi.pdf
    • http://giludus.golfwithmickey.com/uploads/1/3/0/7/130776791/gosomagafigupi_veriralaseter_zakewubuwuse.pdf
    • http://files.ourscienceclass.net/uploads/1/3/2/6/132681219/rowuxaretoxixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/83641108508.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/16581138767.pdf
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/guzijowaritini.pdf
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/eager_loading_sequelize.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/31292860621.pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/mp4_to_wav.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/28735642608.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/wenagukeluwixixefidotik.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/jaguzapikedijexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/fapezetanefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/romopegumirenurepomowom.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_off00006d92.bin
b32112b7a4fd4cc751762e4f6c0e47e896ebe8052aa1f70343a8e21e01cf6e4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D92 5384 bytes
font_01_sfnt_off00008010.bin
77f68fd38fe3ce6051cce9fc18467beefb26608453112233bc10ebeb34978462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8010 10556 bytes

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