Malicious PDF — malware analysis report

Static analysis result for SHA-256 de024da545fb7af2…

MALICIOUS

PDF

39.3 KB Created: 2020-08-07 01:14:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57ebf8f11087890868fea2655380a31b SHA-1: ef67a658a270b97073fa248591dcd48adc140659 SHA-256: de024da545fb7af2eaeaafdb42f2604efe96404a163a14b95de07657eb336342
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=scope+of+variables+in+java+pdf'. Another heuristic indicates a link farm structure, with many links pointing to Shopify domains, likely for SEO manipulation. The document body, though heavily obfuscated, contains the same URL and topic as the malicious link, suggesting a lure to a malicious site disguised as a technical document.

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/pify?keyword=scope+of+variables+in+java+pdf
    • http://wikifutuv.lifeisforlivingshow.co.uk/uploads/1/3/1/4/131438177/jumorepijekodoni.pdf
    • http://files.powerwindowparts.net/uploads/1/3/1/4/131453018/f35a710f81e.pdf
    • http://files.koshishpanindia.com/uploads/1/3/1/3/131379296/kirurumateka.pdf
    • http://files.costacalidapropertybroker.com/uploads/1/3/0/8/130874126/2374865.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/romaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0297/files/23209405092.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9597/files/16056054540.pdf
    • https://cdn.shopify.com/s/files/1/0433/6448/3240/files/19214092414.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/briggs_and_stratton_5hp_engine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/sopixize.pdf
    • https://cdn.shopify.com/s/files/1/0433/4495/3509/files/27969942710.pdf
    • https://cdn.shopify.com/s/files/1/0432/3727/7855/files/esophageal_candidiasis_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/gidabumusosu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/79619900903.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/57645260986.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_off00005b0e.bin
b2c05628763d16bb4f263bde81e8ab887f096cc9894d4753f1513172484825a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0E 5528 bytes
font_01_sfnt_off00006df1.bin
aeef6b598e906bad717b8d612b4c232dfdbb2e97d8fb756dbc62107f519aa48c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF1 10296 bytes

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