Malicious PDF — malware analysis report

Static analysis result for SHA-256 58de611321e5c259…

MALICIOUS

PDF

45.7 KB Created: 2020-08-09 20:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7afa6eb25b65bfaa611a321e9acbc69e SHA-1: 26e59dafc7ee68f08aaf8f8d121f938788a8dccc SHA-256: 58de611321e5c259e13c1232b71e7e83ea680a9aeed7c043d18800e203c3e201
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, and the PDF structure itself does not indicate specific exploit techniques beyond redirection.

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=baroque+and+rococo+art+and+architecture+robert+neuman+pdf
    • http://files.nkbrar.com/uploads/1/3/1/0/131070938/5259384.pdf
    • http://files.irasphotos.com/uploads/1/3/2/6/132695194/gapuwe_tujenogagewit_vavuzubanapata.pdf
    • http://jigubu.jguerzonpictorials.com/uploads/1/3/1/8/131871980/zumemenojalirotibab.pdf
    • https://cdn.shopify.com/s/files/1/0440/3593/2310/files/one_touch_ultra_mini_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/clever_compress.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/jevododujipe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/micromedia_flash_professional_8.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/2425622759.pdf
    • https://cdn.shopify.com/s/files/1/0441/2276/7512/files/belichick_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/9981/6090/files/94874774471.pdf
    • https://cdn.shopify.com/s/files/1/0430/1812/5465/files/tmobile_blackberry_classic.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/hogan_s_heroes_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/optex_vxi_r.pdf
    • https://cdn.shopify.com/s/files/1/0431/9189/4176/files/37637265956.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/85040045313.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.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_off00007358.bin
28468c7e0762a6f16f9d02f27e174cd78ddefb8afd9a3224861724083bbac691		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7358 5500 bytes
font_01_sfnt_off000085dd.bin
26ce65e7c703e3df67b41d2c738bc82603f992f1aec8bb121e68652d3dcc4799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DD 10396 bytes

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