Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6845e72c0119386…

MALICIOUS

PDF

41.6 KB Created: 2020-09-01 11:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 976ca5bbe0d5c1fafe7f35feb4750050 SHA-1: 9e695ad4ef2691e3f71539fc4e4df9454061d8e9 SHA-256: d6845e72c0119386aac84da4f6b4296b88bed55a38d77bac167b7d6584361897
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=asphalt+8+airborne+for+pc+offline', is presented in a context that suggests it's a download for a game, aiming to trick the user into clicking. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=asphalt+8+airborne+for+pc+offline
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/21682659338.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/6031959089.pdf
    • https://cdn.shopify.com/s/files/1/0440/7869/4565/files/sufegebesasuziliw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/national_sports_awards_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/18878287647.pdf
    • https://static.usrfiles.com/ugd/b8c837_56c0b4bed7f74b5cb74e8850294d410d.pdf
    • https://static.usrfiles.com/ugd/ae059d_3b2e249448df4961849cf5c40cc31568.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/90798708536.pdf
    • https://cdn.shopify.com/s/files/1/0461/2168/1060/files/19624495026.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/36396486552.pdf
    • https://cdn.shopify.com/s/files/1/0463/5131/9202/files/gaxetodafudofele.pdf
    • https://cdn.shopify.com/s/files/1/0443/6285/8652/files/data_analysis_in_research_proposal.pdf
    • https://static.usrfiles.com/ugd/d4a9d6_f1078a50497e4df581180b6abe94d176.pdf
    • https://static.usrfiles.com/ugd/921909_0e3dee745b604dfdbfe869524920e3a0.pdf
    • https://static.usrfiles.com/ugd/3d0627_4046c145c924488a8acf455b56d945df.pdf
    • https://static.usrfiles.com/ugd/726ec9_9c00e96bdac64146b9405b39c32f32a3.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_off00006146.bin
8b148416200046d74413dc48f74cf132480f4be54f2cc2103d1c5e46c93d27ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 5428 bytes
font_01_sfnt_off000073b1.bin
566c1d1e1aac8d50f186ee34048c0ff6ead89cdf15a0f67bd097e2bdac97b196		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B1 11708 bytes

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