Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fd7f3a02590614…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 19:36:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61960c3ba0e53fb88b6e1cd572ac63c9 SHA-1: 4ddb62c52876d9b977fcb5aa26a86b416f533183 SHA-256: 34fd7f3a02590614019ebfcdf7876a378f4fac3cc35417ff411c3668b578cfa3
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector pointing to 'ttraff.com'. The document body, though partially corrupted, includes the same URL and academic-sounding keywords, suggesting a lure to disguise the malicious intent. The presence of numerous PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm strategy to distribute the malicious URL.

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=o+que+%25C3%25A9+pesquisa+bibliografica+segundo+autores+pdf
    • http://siwegi.exploresandiego.net/uploads/1/3/0/9/130969204/bevoginomadoze-vokarazoza-mazobu-lavazupanimu.pdf
    • http://files.samanthianixon.com/uploads/1/3/0/8/130813922/4382334.pdf
    • http://files.ddayhistorian.com/uploads/1/3/0/8/130813528/8237635.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3439/files/13585149486.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/bgcse_past_papers_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/cessna_172_poh.pdf
    • https://cdn.shopify.com/s/files/1/0438/8323/3448/files/xojene.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/sownik_angielski.pdf
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/dirurubeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/zumilebopojufelol.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/67329872125.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/79687692031.pdf
    • https://cdn.shopify.com/s/files/1/0441/0785/8072/files/radulukugemurote.pdf
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/judajilinugoraxafazubufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/bisede.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_off00006b5b.bin
6ec99122ebdc898ca4bba6f7116744791caa7740f709f3a4c4a0e1d95ecb3472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5B 5760 bytes
font_01_sfnt_off00007eac.bin
8bed0477b17616cb4a4712860b3793c4a1776c3e197a06491bf1ac297a125379		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAC 12196 bytes

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