Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae4f88ccc53a3e8…

MALICIOUS

PDF

58.9 KB Created: 2020-08-29 07:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff05eca3d150c9670e47a7bbff9dd074 SHA-1: de58dd11c595dabc27994a4aba68a01a12aaab4f SHA-256: 9ae4f88ccc53a3e8c8af4c3588e60ab6636ac945c639889b992767be7c6452a4
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a link farm heuristic further suggests a malicious intent to drive traffic to potentially harmful sites. No scripts were extracted, and the document body's content is largely unreadable, making it difficult to determine a more specific attack pattern or family.

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=shingeki+no+bahamut+virgin+soul+characters
    • https://static.usrfiles.com/ugd/b8c837_9698d9746ec44ffb9c18193521fbafa5.pdf
    • https://static.usrfiles.com/ugd/b8c837_28a9738e42ed40d7a2144618ada34151.pdf
    • https://static.usrfiles.com/ugd/b8c837_48e0740b91574e8087fc1d573c0f6999.pdf
    • https://static.usrfiles.com/ugd/b8c837_f8b39de29eb5415da204c7882912d823.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff8499a58af34afdb1c8da4a1b3886bf.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/siwudufelepekeluxolufekek.pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/91152953635.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/dotebinavipulivefiter.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/74056206424.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/cost_accounting_15th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/car_games_apk_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000749e.bin
c2ee6f8c6fdaf654a128ed57b28eada44adc0e36ab20e5f24baf874a75ba33b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 15108 bytes
font_01_sfnt_off0000a404.bin
7c94bd586760b5168c9d69f27c492f2f9836286b5fd684572033831468037e24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA404 5580 bytes
font_02_sfnt_off0000b6ce.bin
ca5994ea97948c4eb7844aeff8923cf98009bcbcebfa3ef927a716ec75cbf6d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CE 11752 bytes

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