Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2f83ca8c552f21…

MALICIOUS

PDF

37.6 KB Created: 2020-08-28 14:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8721376b7134fbd1af5356053f7723a2 SHA-1: 650b078ec1fe38ee7c6a739bde0b615443956b76 SHA-256: 9f2f83ca8c552f21ebf2b3b05424c78bafb1e8a3463afa2f8de2a3b6caa772d6
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=hope+to+die+free+download'. The document body also contains this URL and a large number of other PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious link is likely intended to redirect users to a harmful site, possibly for phishing or malware distribution.

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.me/pify?keyword=hope+to+die+free+download
    • http://files.rebeccalynnphotography.net/uploads/1/3/0/8/130874518/4840188.pdf
    • http://loges.wifh.org/uploads/1/3/2/8/132815180/9149983.pdf
    • http://files.hungryheartsfoundation.com/uploads/1/3/1/4/131438639/1696537.pdf
    • http://parupov.brickstherapy.com/uploads/1/3/0/8/130874493/pelavalerabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/stand_up_speak_out_talk_back.pdf
    • https://cdn.shopify.com/s/files/1/0438/1769/7437/files/97427420567.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3574/files/upgrade_huawei_p8_lite_to_android_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/linksys_wrt_160n_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/23567713846.pdf
    • https://cdn.shopify.com/s/files/1/0434/4794/3330/files/antigona_cela_knjiga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/bisedopuriduwodubijixa.pdf
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/testing_tool_selenium_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/20315433714.pdf
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/uncc_sovi_menu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/thrombectomy_for_stroke_guidelines.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_off000056a3.bin
2fa7d8c0729331b089eb10d1f39399caed7e98dc7bb1a73ff1cb9dfabfa42e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A3 4908 bytes
font_01_sfnt_off00006770.bin
1c3a5c19d8d4ff1c56ddd37691432d84eebbb2f0867534c269bfb0a58bb44bfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6770 10136 bytes

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