Malicious PDF — malware analysis report

Static analysis result for SHA-256 c269aed7da34176c…

MALICIOUS

PDF

119.3 KB Created: 2020-08-13 00:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 502e42a6034e11502241bdfcf2c83e36 SHA-1: 0a957515e2c9d0ae4e56474a28592ace7f00d488 SHA-256: c269aed7da34176c3ca17c2c239ec7f6de47ad5aa4ab487cc78d165f702e182c
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service (ttraff.ru). This indicates a link farm designed to obscure the final destination, which is likely malicious. The presence of a redirector URL and a large number of generated SEO PDF links suggests an attempt to lure users to a malicious site. The document body contains the redirector URL, reinforcing its role in the attack.

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=astronomy+definition+pdf
    • http://zuxijidip.zerowastemamas.com/uploads/1/3/0/7/130738799/524604.pdf
    • http://files.alplausumc.org/uploads/1/3/0/7/130738870/c07745b2f4be1.pdf
    • http://files.colleenbardelli.com/uploads/1/3/1/8/131856065/gijomagez.pdf
    • http://zogonogol.goldenfleecefarm.com/uploads/1/3/2/7/132740718/sopajumopuxo_lojude.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/21_jump_street_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/mevigilopeditasajinefurel.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/12640913405.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/metirelasosuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/html_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/25284087014.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/electrical_breaker_types.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/95268245878.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/pikodefasug.pdf
    • https://cdn.shopify.com/s/files/1/0433/3846/5435/files/pabagikuluvige.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/41334302115.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/dotogavobe.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_off00015ee8.bin
a0acb66fa83628f84f33535f7181b075f2c9d15555e1232d6dc6fa76516614fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15EE8 4128 bytes
font_01_sfnt_off00016d74.bin
295f157942b47805b9b80fa4a271456f38274b6c4b5a7f74c6845cd1d2ad27ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D74 4824 bytes
font_02_sfnt_off00017dc1.bin
56fbce059ee058aca4b0460c24f40288e54e470b6dc611497a38144c01bab47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17DC1 13588 bytes
font_03_sfnt_off0001aa57.bin
94d6418696c8bee3eca399091c9db5f62845ca883e0d96bdb6d1264ec9a995b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA57 16348 bytes
font_04_sfnt_off0001c04a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C04A 4324 bytes

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