Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a956ba2977795e…

MALICIOUS

PDF

49.2 KB Created: 2020-09-16 18:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877231fce5d8ab943f66060e20e42aa1 SHA-1: b45e07a5f99166ea7492d6c66210d8f7bae4481a SHA-256: 25a956ba2977795e18126e0efa1eb82ca724f8d76ac028e2186c9848411ad20c
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.me, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to benign content, indicates a potential link farm or SEO poisoning attempt to increase the visibility of the malicious link. No scripts were extracted, and the document body's content is not directly indicative of a specific malware family.

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/wix?keyword=the+course+of+true+love+pdf
    • https://19c3cf87-49a0-4e88-87ed-29cc8f195bfb.filesusr.com/ugd/6cf0f5_4252665c7dc84e75889d25deda20cf83.pdf?index=true
    • https://d2b41cb5-87af-4668-a4d9-fc7cfc0aa983.filesusr.com/ugd/de3d83_af2316d4e0454689adb88bab7229d8d4.pdf?index=true
    • https://fc3062ff-fe48-4bd3-bbe2-6a1a2307ad7e.filesusr.com/ugd/3c8574_8462c6359ba8417b906fcb91e8830e5f.pdf?index=true
    • https://5bacd92a-bbf2-40aa-a9d1-f6bad4c1b349.filesusr.com/ugd/31593d_27e2aba428834a309ffe9aa08d352496.pdf?index=true
    • https://05adf4bb-1c87-4fd9-a165-7ac06212771d.filesusr.com/ugd/38eac1_20843e0a9c494cd9a37c75dff74cd0ba.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/0855/6182/files/best_free_android_football_games_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/rekanofetojimovuwozamol.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/carbamazepine_davis_drug.pdf
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/zugesexupol.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/38011384475.pdf
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/30631825633.pdf
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/2_pedro_hernandes_dias_lopes.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/dewukumupinuwoxetilufuwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1707/5868/files/caline_snake_bite_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4917/files/64967589466.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/turning_points_of_world_war_2_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1607/files/43714831006.pdf
    • https://cdn.shopify.com/s/files/1/0444/4097/7574/files/apprendre_le_francais_pour_debutant.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c36.bin
4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C36 6588 bytes
font_01_sfnt_off00006caf.bin
08a338773a48f65e7003e53f9a623c43e60b80f8de94d1213448c8ac559078a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 5040 bytes
font_02_sfnt_off00007ddd.bin
cbb5be0b7ad86c98e803622faf14cda848a65c827c0cd954a580566281e34ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 10328 bytes
font_03_sfnt_off0000a168.bin
8d9df37e6f286ec58e52e34332e24023c33176ebd8b0f6f4eb48f4330bb2100a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA168 16292 bytes

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