Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2aa0ac7d1c6512…

MALICIOUS

PDF

40.3 KB Created: 2020-08-06 03:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 434ed4542cb7d159f790abab4277b098 SHA-1: b866f60711a1a7c6c2583e7bfd60306265c20c14 SHA-256: 4e2aa0ac7d1c6512f7ad74d82873bd83c03cdac8105314c1c3e1b482a64b0380
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 't shirt pdf template free download' and the malicious URL, indicating a lure to trick users into clicking the malicious link. The primary attack pattern involves redirecting users to malicious infrastructure under the guise of providing a free download.

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=t+shirt+pdf+template+free+download
    • http://files.wolkenfeldhomes.com/uploads/1/3/1/3/131382395/5640305.pdf
    • http://files.kahaa.org/uploads/1/3/0/8/130814205/1334916.pdf
    • http://files.autismeducatorsact.org/uploads/1/3/1/4/131454034/7450090.pdf
    • http://files.bravemansuitingco.com/uploads/1/3/2/7/132740327/6158b5d2ccc964d.pdf
    • https://cdn.shopify.com/s/files/1/0430/3798/2869/files/lidawitasujijitufa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/86119686753.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/patino.pdf
    • https://cdn.shopify.com/s/files/1/0438/5210/3842/files/97824705294.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/tugubozexegozorovowurazun.pdf
    • https://cdn.shopify.com/s/files/1/0437/9397/3405/files/16404138009.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/disintegration_effect_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/gafofukak.pdf
    • https://cdn.shopify.com/s/files/1/0437/4003/7271/files/40523971459.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/11196873675.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/89224743468.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_off000060cf.bin
b43b7a2f6dcf7693e3d2dbb04a74728af72fe32ef8b4d95676f80c49eec3eadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 5324 bytes
font_01_sfnt_off000072cb.bin
63051c7dd821730bc4bd4a0148973a834d0d90cadaa8abca52256c15af3add8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CB 9892 bytes

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