Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3680464f2b1eb57…

MALICIOUS

PDF

45.2 KB Created: 2020-08-11 21:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5c0362438a5e057ea04e2a4ddeab201 SHA-1: 5f4968790d257ebc08c99264e91eb4d8c1767852 SHA-256: e3680464f2b1eb57074a077bf765311e8f11edd8213865371d6290a109c99da8
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.cc' which is likely used to serve a malicious payload. It also features a large number of links to external PDFs hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The presence of a 'download button' heuristic further supports a lure-based attack. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=java+programming+pdf+download
    • http://files.marimbahall.com/uploads/1/3/1/4/131452799/zoxara.pdf
    • http://rozekubi.novelideasbylaura.com/uploads/1/3/1/4/131437792/tofamemevetivureg.pdf
    • http://fupeliko.discoverhomestores.com/uploads/1/3/1/4/131407406/729887.pdf
    • http://files.maclucille.com/uploads/1/3/2/6/132682905/gobikonuru_bekezuxal.pdf
    • https://cdn.shopify.com/s/files/1/0434/9575/1842/files/62004300942.pdf
    • https://cdn.shopify.com/s/files/1/0433/8873/1546/files/roxofoforetimavikokel.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/1577481484.pdf
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/2k14_cheats_codes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3296/files/sejefafegapewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/sameva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/63818834088.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/albert_einstein_books.pdf
    • https://cdn.shopify.com/s/files/1/0445/9141/5460/files/acorn_80_stairlift_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/92045351804.pdf
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/rarebadatuketumavumufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/werudof.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/tenasipupevozoki.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_off000070e4.bin
94fc19eb9258e511960a7f3af53aa58e5c389774648e600501544442a362c0ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x70E4 5324 bytes
font_01_sfnt_off00008302.bin
3b2a0305577518c93c5fe38defaa66e1ab142b18d913fd72125cca5fdecade6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8302 10704 bytes