Malicious PDF — malware analysis report

Static analysis result for SHA-256 4befa961cd3c1b0a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-31 02:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d25aeb923d0be133db760a35358da52 SHA-1: 61643e4dfc22c088f1a356a8924b8de223661cc0 SHA-256: 4befa961cd3c1b0ad9ca95ebc0273c54774e3faff18811523181517444b8b6ad
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com' which is flagged as a malicious redirector. The document body and embedded links attempt to lure the user with a fake game download, likely leading to further malicious content or malware. The PDF also contains a large number of links to other PDFs hosted on Shopify, which is characteristic of a link farm used for SEO poisoning to improve search engine ranking for malicious lures.

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=free+download+five+nights+at+freddy%2527s+2+apk
    • https://cdn.shopify.com/s/files/1/0441/0051/8040/files/babuxonut.pdf
    • https://cdn.shopify.com/s/files/1/0448/5762/2689/files/arrow_down_symbol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/stepwise_regression_spss.pdf
    • https://static.usrfiles.com/ugd/b88e3d_c2242df99bcf41f3891ecdf450a1ee83.pdf
    • https://static.usrfiles.com/ugd/4b68be_45f672ce4972410c81fae2c80a424b9e.pdf
    • https://static.usrfiles.com/ugd/08fe48_b9a73b471119443d995a94c40b1fb168.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/fokatapeva.pdf
    • https://cdn.shopify.com/s/files/1/0463/9857/0651/files/kanufoluvokajuxape.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/spotify_android_app_quality.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/mla_format_outline.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/34803817393.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9766/files/mitosis_and_meiosis_color_by_number_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/actions_the_actors_thesaurus_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/9339/2536/files/abecedario_coreano_espaol.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_off0000604a.bin
09720d012b4fcdf09ac096a6dedbc184f1e8176c7a04d75b0086853a1067f169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604A 5740 bytes
font_01_sfnt_off00007400.bin
6e0e21a649571f44cd398f60cb9f0248f18cafda02967ac8c5a59f1092072c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7400 10120 bytes

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