Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e8f7d16605c50a0…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 15:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67f0c6fcfe0514f385c5af013a69c894 SHA-1: ac864df71bb1500418d9b414b1812bfb07415f61 SHA-256: 4e8f7d16605c50a0c144c502a4a04fb73f3852071b5d460ebb2c6134d0aedca3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized lures. One prominent link, disguised as a job description, redirects through a known malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=job+description+of+administrative+manager+pdf
    • http://files.agarnetrose.com/uploads/1/3/1/0/131070009/duwik.pdf
    • http://jurujadu.lenioffringa.nl/uploads/1/3/1/8/131856772/69357.pdf
    • http://files.muphipvsouthbay.org/uploads/1/3/0/7/130739165/5190843.pdf
    • https://cdn.shopify.com/s/files/1/0436/6735/7846/files/feduxikex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/nesewowijowejapapivilop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/megili.pdf
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/81169880041.pdf
    • https://cdn.shopify.com/s/files/1/0438/6373/6475/files/70936707821.pdf
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/ugly_s_electrical_reference.pdf
    • https://cdn.shopify.com/s/files/1/0437/2650/4086/files/kizusedodulutoxazo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/62554588614.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/3700226586.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/bovavorijugivosobum.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_off00005fd2.bin
0440c0ad65b8ae46f9e3112531990d0a1ba0983d82fc48a841356f6d75100cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD2 5632 bytes
font_01_sfnt_off000072e9.bin
5a05366d55420c26b49586e4e72d41623d4f4ad7ae8aadf0def9a105901015d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E9 10448 bytes

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