Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b794a94abf9c6c2…

MALICIOUS

PDF

40.6 KB Created: 2020-08-30 07:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4263f9fc6c8042c28b077fefecef8112 SHA-1: 9c48f92a283ca4d11944bb7c3be6a848e4647a52 SHA-256: 2b794a94abf9c6c208156ee12f5eff2e766db5755b0190de1e43a3d1dd4424f7
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Sims 3 ipad download'. The PDF also contains a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, which points to multiple other PDF files.

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.ru/wix?keyword=sims+3+ipad+download
    • https://static.usrfiles.com/ugd/30e015_3a1a6aca95854d2982c8bb88085e21dd.pdf
    • https://static.usrfiles.com/ugd/12745a_c5781ce460d04b99970fc4f6b9b06d0f.pdf
    • https://static.usrfiles.com/ugd/d3758e_c6a4329e98db441f9b96c2e2611d459b.pdf
    • https://static.usrfiles.com/ugd/b8c837_58663ce709c448bca39a3026dc301f13.pdf
    • https://static.usrfiles.com/ugd/b8c837_75d5d82399a74aec98401ac42c2378e0.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/wasilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/kanilowun.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7495/files/assimilation_phonology.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/53438627534.pdf
    • https://static.usrfiles.com/ugd/93c935_2a1fe173507a42cabb75becc92483312.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fa672193f8f495ba5c5a35fbf6b7472.pdf
    • https://static.usrfiles.com/ugd/565485_cb45e7af7f06445ab63d505eca13c0ee.pdf
    • https://static.usrfiles.com/ugd/de65f7_41a236ac64904a89b8845bfec6b458d3.pdf
    • https://static.usrfiles.com/ugd/05900a_ca98545bbad64b419f3ebdb17359efb5.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_off000061a2.bin
ce42811c2c2b0cc14b260de38e66ebff06ec1f3e57ec0fe7aac710a98a1585cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 5368 bytes
font_01_sfnt_off000073d0.bin
00b224a78f64e9f68fdcf3de3fe4ffceb18963e8e8c46d36ad6bad3563624369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D0 10016 bytes

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