Malicious PDF — malware analysis report

Static analysis result for SHA-256 25038ab35ca98c13…

MALICIOUS

PDF

60.1 KB Created: 2020-08-28 09:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5300c154a9a3814b950411a140ec1962 SHA-1: 0a14f5d5ac577ca665037788c7be4c215ec830ef SHA-256: 25038ab35ca98c1320d4d01e322416a1d016b287343f6b8b07694d95563aa94c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, with one identified as a known malicious redirector. This suggests the document is designed to lure users to potentially harmful websites. The presence of numerous Shopify-hosted PDF links indicates a link farm strategy, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

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=%25D9%2585%25D8%25A7+%25D9%2587%25D9%2588+%25D8%25A7%25D9%2584%25D8%25AC%25D9%258A%25D9%2584%25D9%2588%25D9%2585%25D9%258A%25D8%25B1%25D8%25AA%25D9%2588%25D9%2584
    • http://files.wchsmuseum.org/uploads/1/3/0/8/130874474/6563374.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/91362702608.pdf
    • https://cdn.shopify.com/s/files/1/0434/4388/0093/files/gotawexaxokokitanuge.pdf
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/ramadan_2020_calendar_usa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/adobe_dc_pro_download.pdf
    • https://cdn.shopify.com/s/files/1/0446/7264/7331/files/lund_and_browder_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/tumobu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8725/5970/files/nike_sb_tre.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/76219825021.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
stream_006_off00009bb6.bin
0907cf914cf538a7af16d989c492067e10dade05e668d9b25576466fc5f99419		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9BB6 31364 bytes
font_00_sfnt_off00005c19.bin
39b723426ba3d8c138591a08cf7ac57ce1af2078f96d7f7cb3d2ce0498b9dbc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C19 3396 bytes
font_01_sfnt_off00006721.bin
9fea9cd6ade43ccded1dfb96a1740257a7839395f8fe5e6a0d05c22969b9b483		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 17344 bytes
font_02_sfnt_off000080be.bin
2335ae04c10e220402452bd395811a9ce0eef1d5ba193f0d117f2f7d2863861b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BE 7828 bytes
font_04_sfnt_off0000d270.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD270 4324 bytes

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