Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a42a4d1c29cd153…

MALICIOUS

PDF

46.8 KB Created: 2020-08-23 17:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9378df87343dcb0ef64dd4950855b3f1 SHA-1: e29ba118012c1a9a79de2f10f2cce17918ed098b SHA-256: 9a42a4d1c29cd153b3e21311cc3fb175c57eca401f4602560e87d074e490a2e9
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body text, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a lure for a game modification download. This suggests the primary goal is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=hungry+shark+evolution+mod+apk+latest
    • http://files.boatdocksolutionguy.com/uploads/1/3/1/3/131380005/a7009388.pdf
    • http://files.michaelcroghanphotography.com/uploads/1/3/1/8/131856706/denamamawapofo.pdf
    • http://rilag.steadfastleaders.org/uploads/1/3/2/8/132815806/6310961.pdf
    • http://files.bestexpressions.co.uk/uploads/1/3/1/8/131857602/6915821.pdf
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/53797124618.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/24863824616.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/basketball_rules_test.pdf
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/4800128064.pdf
    • https://cdn.shopify.com/s/files/1/0433/6789/1094/files/wiwajakenotenat.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7227/files/lenakusovesosujalemuzefix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5908/files/46867909072.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/gusion_guide_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2082/files/municipio_significado.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/dilations_worksheet_kuta.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a83.bin
082f2e825a8200d41c0b1df1f0b80ee538ce874ae7eb75f781f47929755f6ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A83 5440 bytes
font_01_sfnt_off00007cdc.bin
fbbdf3dcc37d467ba994a36bcf7d8f595de2947426cb4ef52e596466852f5cb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDC 10336 bytes
font_02_sfnt_off0000a038.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA038 4324 bytes

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