Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0267eed6821b28…

MALICIOUS

PDF

47.7 KB Created: 2020-08-05 17:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9ce5aa77ba81fdc97a1225c8a92b6b SHA-1: c3a7213ddd7ea37428312f9b7cc79b0dc80343b8 SHA-256: ea0267eed6821b2807b1bdc80b8a568f065d20d69ff97e7c7ce15499f4716bc0
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to this external site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure and embedded links are sufficient to determine the attack pattern.

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/pify?keyword=bncc+matem%25C3%25A1tica+ensino+m%25C3%25A9dio+pdf
    • http://files.cosmopolifrench.com/uploads/1/3/1/4/131437834/2002812.pdf
    • http://files.yanichoralsurgery.com/uploads/1/3/2/6/132695780/lumajowuvu.pdf
    • http://files.ssquarterhorses.com/uploads/1/3/1/3/131398144/6d4d4fb9c17f55.pdf
    • http://files.promisehomeinspections.com/uploads/1/3/1/3/131398497/mizemafamegowop.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8798/files/titekowodavunanifupuwam.pdf
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/zegasebona.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/71686559601.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/10104885500.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/61734910814.pdf
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/gurej.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9637/files/no_man_s_sky_gravitino_ball.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5721/files/66466297275.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/xutiruwixudoxom.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/xuxikofogigexusajawipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/jizijoraderapisezew.pdf
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/russian_institute_lesson.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_off0000768a.bin
c579fbd8821864a6c5e318ab2be539afe2391de4b984f71c14d1b972eac631d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768A 5596 bytes
font_01_sfnt_off000088ac.bin
4f9b284bccaf2d188513a55f9f58790aae43d7b3f3b546fa7316d00083ec31c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88AC 12868 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.