Malicious PDF — malware analysis report

Static analysis result for SHA-256 3133753071f68a4d…

MALICIOUS

PDF

39.0 KB Created: 2020-08-24 15:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69119eb43c27fe50d65ddc17b56d6a0a SHA-1: e89acc5c23af34f82adf0f916985d34504bff6f3 SHA-256: 3133753071f68a4d16d4cde1fc818342206c9ed7f2dc053b159fe41c40217654
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, which is known malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=ccna+ebook+pdf, suggesting a lure to download a fake ebook. The presence of numerous other PDF links indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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=ccna+ebook+pdf
    • http://files.deeperwalkoffaith.com/uploads/1/3/0/8/130874620/tiwufokigatizez.pdf
    • http://files.fortdavisalabama.com/uploads/1/3/0/8/130874029/tapubisiwemarexikos.pdf
    • http://jaminutol.charlemagnemilitaria.com/uploads/1/3/1/6/131607305/4071151.pdf
    • http://files.burrisdevanney.com/uploads/1/3/1/4/131407164/wijokexofap.pdf
    • http://nisuli.pjcsoco.org/uploads/1/3/2/6/132680813/kopukowew_tofesosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/75666415693.pdf
    • https://cdn.shopify.com/s/files/1/0438/1632/1184/files/vigivibabizujidatagijen.pdf
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/pink_floyd_breathe_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44758106853.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/capitalismo_y_socialismo_diferencias.pdf
    • https://cdn.shopify.com/s/files/1/0449/1676/8923/files/how_to_advertise_discord_server.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/64323249536.pdf
    • https://cdn.shopify.com/s/files/1/0437/4052/8792/files/remipewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3850/6146/files/fast_fletching_guide_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/child_development_and_pedagogy_book_free.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_off00005ad0.bin
0ea71c32e2ab42ccd4232c433082ad4f8af6ef786a59c2684c43a6ed446b4008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD0 4952 bytes
font_01_sfnt_off00006bae.bin
0d0ffec6decc35827c8659c9e4047bae5f8226787c0027181e05b22c0d7b1c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAE 10552 bytes

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