Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c3d46926b1d21e2…

MALICIOUS

PDF

51.2 KB Created: 2020-08-11 00:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3524124eeb786f7874bdb28f7e5b2087 SHA-1: dee487505ec3181d4652040cb6884291d3977e0f SHA-256: 8c3d46926b1d21e2c4c8fde245594c01398cd14fe117834d83862ea69aa046e7
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, characteristic of a link farm used for SEO manipulation or to obscure malicious destinations. The presence of a 'download button' lure further suggests an attempt to trick the user into clicking the malicious link. The primary malicious URL identified is https://ttraff.cc/pify?keyword=agriculture+pdf+agrimoon, which redirects to a PDF hosted on cdn.shopify.com.

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=agriculture+pdf+agrimoon
    • http://files.brianlundgren.com/uploads/1/3/1/4/131438397/9bf7c8d04.pdf
    • http://files.christineshanks.com/uploads/1/3/1/4/131437982/6064072.pdf
    • http://files.thecelticoracle.com/uploads/1/3/1/4/131452944/purifi_ginefiri_xuduto_fafoka.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/mugeziwa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0143/6569/files/against_the_gods.pdf
    • https://cdn.shopify.com/s/files/1/0430/8795/4073/files/nabamotid.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/70396324616.pdf
    • https://cdn.shopify.com/s/files/1/0437/3784/1813/files/types_of_long_term_debt.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/probability_measures_on_metric_spaces.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/how_to_use_digital_multimeter_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/25369395153.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7967/files/94685020037.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/lesimilolibupegozabima.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602a.bin
0528428380074cd5962ee62744fcab8acab5f01f1bc9359e865612722824629d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5284 bytes
font_01_sfnt_off0000720b.bin
6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720B 3720 bytes
font_02_sfnt_off00007d66.bin
87284a45e49bde777a970880cbf576a1c21f9fcfd8383a9e73332573e3ac9e22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D66 2716 bytes
font_03_sfnt_off00008923.bin
2ab04ffcece0ce1ea2068215e70f0f12d9bb65637f94866e6320da9778cde9fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8923 10116 bytes
font_04_sfnt_off0000ac0d.bin
8ddad8c66f4a694d0a202ac378383eccfc6500bf8cf17f4a89ea9cf9cdd124b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0D 5372 bytes

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