Malicious PDF — malware analysis report

Static analysis result for SHA-256 423c0ed67c28626c…

MALICIOUS

PDF

87.7 KB Created: 2020-08-20 21:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 927dc3780f9c7ae5e14bf8f2c61c4ae6 SHA-1: 62c90fc7f95a6642e3bcf1e7db6c7465a490badd SHA-256: 423c0ed67c28626c5a6ecf4a78ef46dc6d9feddf8048e7fb1718b6a5423f3608
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as an 'adp payroll jobs report'. This suggests a phishing or social engineering attack aimed at tricking the user into visiting a compromised site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=adp+payroll+jobs+report
    • http://files.waterfordataberdeen.com/uploads/1/3/0/7/130775953/zorodawowukozomewox.pdf
    • http://files.wrigglefingers.com/uploads/1/3/2/7/132741389/7b588deb.pdf
    • https://cdn.shopify.com/s/files/1/0429/7778/8057/files/xodefiguwapoxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/free_guitar_sheet_music_websites.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/pabetafetotilab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/30155526088.pdf
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/50457403400.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/rapobujakinibu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/53348552231.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/15440066922.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/aprilaire_humidifier_800.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texojorigerusoxuduk.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_off00011110.bin
a98f0ae2e463ea41e27148f3d9f70d4a2917526339ee961c80f97d76a6da14d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11110 5260 bytes
font_01_sfnt_off0001230c.bin
a0ee6af19a00b38cd05dcb86174fc653d7c926a982cc022e6c21784d4b3666c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1230C 14820 bytes

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