Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2f8d5083d79576…

MALICIOUS

PDF

64.9 KB Created: 2020-08-26 03:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e35c99aa6db760e3c8fe0fa77b53a91 SHA-1: 679799ed2fb6080184e1ecf95df792c667070fba SHA-256: 2d2f8d5083d795767eb783a321cf50dadf2e685dfad85e00440f0079ad87d7fa
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 external PDF files hosted on cdn.shopify.com. One of these links, https://ttraff.cc/pify?keyword=youkai+watch+puni+puni, is flagged as a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure 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=youkai+watch+puni+puni
    • http://files.elpasohousebuying.com/uploads/1/3/1/6/131606360/tezefuredu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/4436362014.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/life_beginner_a1_student_book_full.pdf
    • https://cdn.shopify.com/s/files/1/0429/2578/5255/files/six_of_crows_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/array_prototype_slice_call_arguments.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/company_presentation_sample.pdf
    • https://cdn.shopify.com/s/files/1/0441/0382/7608/files/ode45_second_order.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6967/files/chloe_sevigny_bj_scene.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/norajekodadozes.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/35105278013.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/united_nations_millennium_development_goals_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/kutawifimofijolola.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0200/files/bit_by_bit_english_book.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_off00007b6e.bin
b580285467104771bdd01c00854796cc5e478b2217207d6d4f894ac20d39216f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6E 9960 bytes
font_01_sfnt_off00009ced.bin
8df1beb1284794c1ff40b22d529915292c146871c3d4fc2547ad81c399bc6dac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CED 4596 bytes
font_02_sfnt_off0000ac8f.bin
0790d8b689cd053f77030989aee00a5ef58666b8eaeb20ef5c14f1c4f72b8365		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC8F 11148 bytes
font_03_sfnt_off0000d226.bin
5c485768518a5ee43323212f3e9837058db5dfc2148a5de0a32f39379138fb52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD226 16164 bytes
font_04_sfnt_off0000e730.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE730 4324 bytes

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