Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7a43bca5e5f917…

MALICIOUS

PDF

45.4 KB Created: 2020-08-21 14:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1130c6cc291d847e9cd77d08b50dc5c8 SHA-1: de3f38b1d3f65a346ea125b1ca3fa9dfe9370be4 SHA-256: 9a7a43bca5e5f917a82c8c7e1fb5b89941ded8d4246da491e3300422b490e057
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://ttraff.com/pify?keyword=antutu+apk+6.+2.+7'. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests that the document may also contain instructions for executing commands, potentially to download and run further payloads. The presence of numerous embedded links, many pointing to Shopify domains, indicates a sophisticated attempt to obscure the malicious redirector.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/pify?keyword=antutu+apk+6.+2.+7
    • http://files.besodium.org/uploads/1/3/1/4/131452922/4028fa5920147e5.pdf
    • http://bodomeli.elenbnews.com/uploads/1/3/1/6/131636725/8889145.pdf
    • http://kesemide.blackhawkrailwayhistoricalsociety.org/uploads/1/3/1/8/131856998/xogasov.pdf
    • http://files.complianceandriskcompany.com/uploads/1/3/2/7/132740778/8453346.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/30118597022.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/7099703753.pdf
    • https://cdn.shopify.com/s/files/1/0432/5159/7480/files/jovukuwarulikojodedud.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/motavegemezidumedofub.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/common_themes_in_literature.pdf
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/poptropica_24_carrot.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/curl_json_post_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7247/files/16435580792.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/xanonetenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/ereading_worksheets_text_structure_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/black_sheep_movie_in_tamilrockers.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_off00006956.bin
d27be95319ad0013ee6fb3c67b516086815b33105aab3bd5d362e3bdfc91fe97
pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 4956 bytes
font_01_sfnt_off00007a5d.bin
a816802302efa007cad713cc157ac7f3a1f115cd8575546052ae195b49d9df6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5D 16140 bytes