Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0cf85fcaaa5a0e…

MALICIOUS

PDF

54.1 KB Created: 2020-07-27 12:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 929df5ff700c59fcd475a6e4198420ad SHA-1: 63a8ab821109b9df1d49e655ddf81a451b4b382b SHA-256: 7d0cf85fcaaa5a0eb8b8b1836ec73c8d345294bbfc931d6a8513c95bccae3097
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate quiz answers. One critical heuristic indicates a direct link to a known malicious redirector at 'ttraff.ru'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=everfi+module+1+savings+final+quiz+answers
    • http://files.dancoopey.com/uploads/1/3/0/8/130814926/2acdb6fa.pdf
    • http://files.pageantsbymindy.com/uploads/1/3/2/7/132740193/nofutegi.pdf
    • http://files.swartzshowhorses.com/uploads/1/3/1/1/131163613/45de51953ca9.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/ronamuvo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/nogutefibuxeranuzalu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7883/5606/files/44389605607.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/12910382947.pdf
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/90711578586.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/ruzobexorujib.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/33329084440.pdf
    • https://cdn.shopify.com/s/files/1/0432/3409/9362/files/danegadu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7294/5312/files/32015197154.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.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/
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/12910382947

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000713a.bin
30cea61528baefc7a5932a33b9f3396c1785dd48f505b1583c52c2d6300dfcb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713A 4808 bytes
font_01_sfnt_off00008251.bin
cbdef59aa5a649f2a3d59f18dfe74d488e6db7c4fdb230daa7c92743674a0e5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8251 5364 bytes
font_02_sfnt_off0000947c.bin
130c065ed36e2a87f94bedd7982a750c1de19903a03f366a3037419f9ff82bce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x947C 7084 bytes
font_03_sfnt_off0000a74d.bin
58ac2104979fcefed810d22af40f2beae96e469b0d33735b93d98aec6b337084		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA74D 10212 bytes

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