Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7d23d4de4b500b…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 03:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 834f4652ed465f46471d10be2138c8f1 SHA-1: 0c692416cb41d9cc14b0c0b6a2239da91587c08d SHA-256: 8e7d23d4de4b500bdb4962b61331bca9dca1e5423018ad5ce99930a0d4330e57
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a 'partnership agreement' lure and includes the malicious URL. The presence of a link farm further indicates an attempt to distribute malicious content or manipulate search engine results.

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=partnership+agreement+pdf+editable
    • http://files.tmp-gmbh.net/uploads/1/3/2/6/132682585/79d0d.pdf
    • http://files.acottagebythesea.net/uploads/1/3/1/3/131398547/fikab.pdf
    • http://renijate.kipawa.org.uk/uploads/1/3/0/7/130739223/c28debdf06.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/3216814499.pdf
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/lagu_betrayed_avenged_sevenfold.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/java_big_o_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/ditofix.pdf
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/swellinfo_long_beach_island_nj.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/boxex.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/76043908900.pdf
    • https://cdn.shopify.com/s/files/1/0434/3254/2369/files/24677260664.pdf
    • https://cdn.shopify.com/s/files/1/0434/4905/7430/files/terraria_1._3_android_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/xosutanononumesimoxevut.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_off00006888.bin
6714c324bd4d2853113cefded23ea943b887f8f288d46e59b0dcabcb97bbcc59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6888 5596 bytes
font_01_sfnt_off00007b4f.bin
ec5640cdb8c3d05eb6a5218eaa2d74da129cbdd70430fc9e50c8dd428dc64d42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4F 9928 bytes

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