Malicious PDF — malware analysis report

Static analysis result for SHA-256 9335a3157ed98352…

MALICIOUS

PDF

60.0 KB Created: 2020-08-30 21:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76868a5da3c51d0cb4275ca3c5b4c6d0 SHA-1: 85e1aeb67b33cefc33bb2329cb7dfe9f54fb72e6 SHA-256: 9335a3157ed98352cee9abb6758c04ed3484ef35d2ba23262b1a2741724f12b6
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL that triggered the heuristic. The presence of a link farm further supports the malicious intent, aiming to obscure the final destination.

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.link/wix?keyword=let+the+nations+be+glad+pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/71005624584.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/student_attendance_system_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/japaworozikotuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/fabuko.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/51532043658.pdf
    • https://cdn.shopify.com/s/files/1/0432/1188/2659/files/utorrent_movie_website.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/15_prayers_of_st_bridget_pieta.pdf
    • https://cdn.shopify.com/s/files/1/0434/6671/9385/files/conan_exiles_port_forwarding.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/carti_apicultura.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5941/files/daxogoraminufosuzerobabov.pdf
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/50134315272.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/blockbuster_dj_song.pdf
    • https://static.usrfiles.com/ugd/7ff653_2f3efce1d43e4dc5949e3f3ea91fd5b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_eae511e1d280401e82e865bf8488f0b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_9171afc45e8b4b4cacd8a07933505dd2.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_off0000add6.bin
2860ab89014cc2778141b39e32d336d4c8d19f61f1ee3011e210dd27febb8641		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADD6 5288 bytes
font_01_sfnt_off0000bfc9.bin
1caec049ddfdcafc1ea27f81737b9be9f2e2cbc6f6f290b7952abd66b2e77c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC9 10332 bytes

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