Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8993876007e265…

MALICIOUS

PDF

53.5 KB Created: 2020-08-23 00:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523b4373e6a668f22b6470e797cbbe87 SHA-1: 600d51e3fada813eb5f866a3a9d8c049beb8055e SHA-256: ae8993876007e265d9888a8869bbcde269a1f1f6065a816b0bdbe8087061a26d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Happn app premium apk' and the malicious URL, suggesting a lure for a fake application download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure.

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=happn+app+premium+apk
    • http://files.newenergyera.org/uploads/1/3/0/8/130874612/1019597.pdf
    • http://files.varanasiastro.com/uploads/1/3/2/6/132696117/titozamozid.pdf
    • http://files.oldpostfarm.com/uploads/1/3/1/3/131378921/wokixopisoxufu_vexadev_soresek.pdf
    • http://files.chicosierra.com/uploads/1/3/0/7/130775192/9881432.pdf
    • https://cdn.shopify.com/s/files/1/0437/1965/5579/files/zulegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/organizational_chart_template_free_editable.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76410179135.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9575/files/busijoxofumovakaxemam.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/64136015279.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/50301553109.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/dewiruxadifodikamuso.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/53761398459.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/57486344913.pdf
    • https://cdn.shopify.com/s/files/1/0436/5081/0014/files/kezeta.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/64740111836.pdf
    • https://cdn.shopify.com/s/files/1/0432/2829/9428/files/48531661560.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/resupapisekijuduj.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_off00006f00.bin
dbc3ad707fd0c39a46d4f2ad3970a9ab97da86c00808b88e6be783cb5780f0a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F00 4780 bytes
font_01_sfnt_off00007f1c.bin
ff9e0d8c346e8e1a789f460ba9625fd915602772792e6567a21dc7a4e95d7359		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1C 3520 bytes
font_02_sfnt_off00008d46.bin
abb6fcd93f85c233d25b0154b2afe4bdc6d5f3fd62954e7f590d33a243e9416a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D46 10816 bytes
font_03_sfnt_off0000b27f.bin
ed2263b5b1b87d26feaf6dd51e52c1edfdc2b91619b86c665742d6f4c666f530		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB27F 16404 bytes

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