Malicious PDF — malware analysis report

Static analysis result for SHA-256 4845a03605867a5c…

MALICIOUS

PDF

44.3 KB Created: 2020-08-17 18:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47f24b37e1b17b01a26d594fc3879018 SHA-1: 09f32e015506c6e39ca81aef125b2e9c024298cc SHA-256: 4845a03605867a5c48ff3e6a3226c509446c2c84c4212c1ac43e80395708397c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to `ttraff.com`. This indicates a link farm or redirector strategy designed to obscure the final malicious destination. The presence of the `PDF_MALICIOUS_REDIRECTOR_LINK` heuristic firing confirms the malicious nature of the redirector. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack pattern.

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=aprendizaje+vicario+psicologia+pdf
    • http://files.tamipeak.com/uploads/1/3/0/8/130874060/c4908.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5388/files/captain_america_first_comic.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/polafu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/45806334789.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/zulobixafijebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/1146849112.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/o_level_biology_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/duvelizotezusakotekak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7232/3737/files/48081311111.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/supugopuxipawufiwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/kotonewapavuxuzatosumif.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_off00006bbb.bin
1ca02679b53fdf6351376525375f82f9c4fc6d4a88e2ae567f81371b29925c6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBB 5500 bytes
font_01_sfnt_off00007e8a.bin
726e6e95c229a1a783d10b9a83f8f7df14a3b38c6e5517fd36a8f936c555951f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8A 11176 bytes

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