Malicious PDF — malware analysis report

Static analysis result for SHA-256 b83ff2ab6cce0c1a…

MALICIOUS

PDF

41.8 KB Created: 2020-08-19 19:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1e8c6dd08f5627ea172ede07f246f76 SHA-1: b887f88d8513d0a01f1270b412fcf679af1c2540 SHA-256: b83ff2ab6cce0c1a5ad0dde7f4d2ceaabdc03ef81b41d8a67ad86ce72f802a00
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=bosch+built+in+dishwasher+user+manual'. This URL is likely used to redirect users to a phishing page or a malware download site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, suggesting an attempt to obscure the final malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=bosch+built+in+dishwasher+user+manual
    • http://files.christianmeditationrookies.org/uploads/1/3/1/8/131856352/128d2fbf2.pdf
    • http://files.buzzboxguitars.com/uploads/1/3/1/6/131607163/rotusoxobaz.pdf
    • http://lisaf.reyerfarms.com/uploads/1/3/0/8/130874376/dazixidugobax-vigubapadovexo-digonutitevuxis-somovela.pdf
    • http://files.doggiestyles.net/uploads/1/3/2/6/132680907/razozidum-tijonoromobo-zukolunudonopug-ruvadom.pdf
    • http://files.transcendingconsciousness.com/uploads/1/3/0/8/130814351/346f0fe190fbbf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdf
    • https://cdn.shopify.com/s/files/1/0438/3630/9666/files/dawavizakalirenoguzibej.pdf
    • https://cdn.shopify.com/s/files/1/0430/5407/1957/files/kiberiguzopojunorijedo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6684/1505/files/bal_brahmachari_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0448/1315/6514/files/xogetenatumasuluba.pdf
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/agile_scrum_foundation_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/68633465339.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6042/files/45165947398.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/bigizegexoruturapejigi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/lux_tx9600ts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/3512/1048/files/postage_rate_chart_2014.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/sieve_analysis_test_for_soil.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_off000064ca.bin
7180882a02a23fdfbc9bb7f94b808fac8453200acfa2a03587c1bed254f91a91
pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 5460 bytes
font_01_sfnt_off00007734.bin
821f14418fcc5b943b53f589710037d41ef3d271989b079ddd72d14065df8420
pdf-font-stream PDF embedded font (sfnt) at offset 0x7734 10192 bytes