Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba4bb04290f292a5…

MALICIOUS

PDF

50.8 KB Created: 2020-08-31 11:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fa6e65f8fd056cf40131f61f489e2c4 SHA-1: 6af78be8163a89b3a14325e5eef3cdeabf24f306 SHA-256: ba4bb04290f292a514bc600ba3404b1f87caecefc8d23cc1d14450a6327ed5ec
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword related to 'tensei shitara slime datta ken pdf'. While many other URLs point to benign Shopify domains, the presence of the redirector and the ML classifier's high confidence indicate a malicious intent to lure users to harmful content.

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.com/wix?keyword=tensei+shitara+slime+datta+ken+pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/trastornos_psicologicos_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0465/3269/0070/files/50775361519.pdf
    • https://cdn.shopify.com/s/files/1/0433/4613/3157/files/11258227171.pdf
    • https://static.usrfiles.com/ugd/e5a943_78b2e20dec0549989a27f0807c0a28d2.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_028f0d7d5bab495ca84157a232d9b109.pdf
    • https://static.usrfiles.com/ugd/7c3584_dde3d74aea774707afbc28f015eec1df.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/table_flip_emote.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/nopugiwujim.pdf
    • https://cdn.shopify.com/s/files/1/0438/5944/3862/files/6763969553.pdf
    • https://cdn.shopify.com/s/files/1/0462/3810/5749/files/bafezepafag.pdf
    • https://cdn.shopify.com/s/files/1/0462/4695/3111/files/motion_spy_video_recorder_apk.pdf
    • https://cdn.shopify.com/s/files/1/0440/7069/9160/files/12684421374.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/corporate_finance_berk_demarzo_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/2933520675.pdf
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/garotozefobutafaxelu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73792904944.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fe5.bin
3c019088e9ceddadf63b2796092daf7615bee574ea6234969b4a6996d54d36b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 5384 bytes
font_01_sfnt_off00007265.bin
229ac2bfaba1e0b524b9ef568f3219cec0bf2a1f27d68818ca61e4bb772c0d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7265 4972 bytes
font_02_sfnt_off0000830e.bin
9a996a33a084aa32f3dfcfcd55ccf8585563645692f362f46340178ce0e78286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x830E 13684 bytes
font_03_sfnt_off0000add0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADD0 4324 bytes

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