Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac1209b19cbf36f…

MALICIOUS

PDF

52.3 KB Created: 2020-08-09 03:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e09d50aeead50707181e5e33ab9834 SHA-1: fc9460c7f5d999e9d131ea7cb899a6ebeaef5d2e SHA-256: 3ac1209b19cbf36f65c858bb34cc00ce33eeef7c0fc15de06d62ecdd0ead897d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a benign-looking Shopify URL, suggesting a lure to a malicious site disguised as a book download. No scripts were extracted, limiting the analysis of direct payload execution.

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.ru/pify?keyword=everything+everything+nicola+yoon+pdf+english
    • http://files.connecticutgolfacademy.com/uploads/1/3/2/7/132712508/tiwebigukonelaf.pdf
    • http://files.rockytopvacationhomerentals.com/uploads/1/3/0/7/130738998/sozaselewozubunado.pdf
    • http://files.homeschoolamericanhistory.com/uploads/1/3/1/3/131378899/vozigimenirofat_lukexowate_fomuwimemi.pdf
    • http://files.lrldesigns.com/uploads/1/3/0/7/130776120/sedezolubumaxuz.pdf
    • http://files.shilohrealty.org/uploads/1/3/1/4/131408204/joxegatit-jukomewisukok-kilogegogokojek-sizamawoketig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mukevomisuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/45581818618.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdf
    • https://cdn.shopify.com/s/files/1/0438/2588/9442/files/80617006728.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/enrique_iglesias_dimel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/lovurowigejimezajitum.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/merck_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwisosipopiwusanitilowaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/55953907628.pdf
    • https://cdn.shopify.com/s/files/1/0431/0676/2903/files/77062873713.pdf
    • https://cdn.shopify.com/s/files/1/0440/9711/0168/files/avitar_chat_rooms.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/7152062481.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2454/files/kozojebulox.pdf
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/97145200973.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071cd.bin
6f9e4612e7b8892258ec18d0c5586afda5d5c184ecc26ea3d9b5b5a12090f074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71CD 5536 bytes
font_01_sfnt_off000084b8.bin
09004954916ea438a473f451762a1e8f120a4f40aa82a260742d27848a237ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B8 14868 bytes
font_02_sfnt_off0000aeb9.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB9 16092 bytes

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