Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c40804e87bdf41d…

MALICIOUS

PDF

47.9 KB Created: 2020-09-01 22:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5571830ced4f706c1ea6ebbd39550e0c SHA-1: 4de21ad0c8018779dce9205beac8cf4302d6be1b SHA-256: 8c40804e87bdf41dd5eeb35d6b990db1696fe75b16df5d36bee118f9a2bc7f05
120 Risk Score

Malware Insights

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

The PDF document was flagged for containing a malicious redirector link and a large number of embedded links, indicating a link farm. The primary malicious URL identified is https://ttraff.com/wix?keyword=photoshop+adobe+trial, which is likely used to lure users into clicking on further malicious content. The document body, though heavily obfuscated, contains references to 'Photoshop adobe trial' and several Shopify URLs, suggesting a lure for potentially pirated software or a scam. No scripts were extracted, but the PDF structure itself is the delivery mechanism.

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.com/wix?keyword=photoshop+adobe+trial
    • https://cdn.shopify.com/s/files/1/0429/3830/2630/files/30577518129.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/sivabonerefos.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/nusagud.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/82926579214.pdf
    • https://cdn.shopify.com/s/files/1/0459/2484/3687/files/lyrics_brooding_by_victoria_orenze.pdf
    • https://static.usrfiles.com/ugd/76de1a_229e5a2a4a9b46279861c97eda40606a.pdf
    • https://static.usrfiles.com/ugd/e643da_9640e319318b4e40bb1d8df062787e12.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffa8688089a64fd181585a1459adc7e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_1526747ca75a40349b438c9bd8466d4b.pdf
    • https://static.usrfiles.com/ugd/55cc32_e1d4ed99f269452ca94fb327df550538.pdf
    • https://static.usrfiles.com/ugd/26481d_c88aceb4d2c8450080a7e17e1d792916.pdf
    • https://static.usrfiles.com/ugd/49be48_13acb43a72e646c995980502cefa107d.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_off00007ed0.bin
a1b6cc659110a87ec0cd029638bc26999c1bd48e15ad2d28edca329042d9950d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED0 5188 bytes
font_01_sfnt_off0000905c.bin
a3a6230233b903e8551f73e2a711baf6dfce61bff17fa7a2801fd928cda7abdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x905C 10296 bytes

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