Malicious PDF — malware analysis report

Static analysis result for SHA-256 8458c6077cefebf2…

MALICIOUS

PDF

39.6 KB Created: 2020-08-26 01:18:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7aa91a92947ee1f057632a1a4c34b480 SHA-1: f6c65ba51c3aff50a254644e5362c2243f08520d SHA-256: 8458c6077cefebf214e0798c2532a96fe667fdfea5ad4da62b9a7bfa4bbbcf14
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'ttraff.com'. The document body contains garbled text but also includes the URL 'https://ttraff.com/pify?keyword=manual+test+de+la+figura+humana+goodenough', reinforcing the malicious redirection finding. No scripts were extracted from this sample.

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=manual+test+de+la+figura+humana+goodenough
    • http://files.airconditioningcambridge.co.uk/uploads/1/3/0/7/130775286/napuwuzoduzu.pdf
    • http://files.rhsmorningshow.org/uploads/1/3/0/7/130739945/bunabejulem-pazepogo.pdf
    • http://sosozel.lakehousebv.com/uploads/1/3/1/4/131438759/f95370b9fd2.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/loxuduludu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6502/files/vesafotamoxixujovebami.pdf
    • https://cdn.shopify.com/s/files/1/0431/2095/1445/files/28176076492.pdf
    • https://cdn.shopify.com/s/files/1/0432/3747/4472/files/25308616887.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/pdf_homero_odisea.pdf
    • https://cdn.shopify.com/s/files/1/0439/1321/6168/files/tidugelatezosigubab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8541/files/brazing_copper_sheet_metal.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/html_tags_book.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/8294851524.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/nuralasipu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1407/files/idioma_kaqchikel.pdf
    • https://cdn.shopify.com/s/files/1/0437/6903/6958/files/vesonizo.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_off00005e3e.bin
2d717eb954677411558151061beac14b60f24c09589162d1f9fa9990612e6c92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3E 5324 bytes
font_01_sfnt_off0000702b.bin
bfb55e8d5391ad430b347b495ff2d9c260a8be892b567b8851bedbbd65303268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702B 9756 bytes

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