Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffcdb5d1af47d2f6…

MALICIOUS

PDF

66.9 KB Created: 2020-08-05 23:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e7c18e9f6884f87b5ce1d99caab22c2 SHA-1: b5b3f233bd206dbeb2b01dc62610650e7a7f05c4 SHA-256: ffcdb5d1af47d2f60a675c511679bf200f2397febb573454f239e3373e75bfb5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=ketogene+ern%25C3%25A4hrung+liste+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, including 'https://cdn.shopify.com/s/files/1/0431/5666/8565/files/metoxo.pdf', suggesting an attempt to manipulate search engine results or distribute content through multiple links. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify 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.cc/pify?keyword=ketogene+ern%25C3%25A4hrung+liste+pdf
    • http://files.kilkennyfootclinic.com/uploads/1/3/1/8/131872037/3214212.pdf
    • http://files.illuminated-engraving.com/uploads/1/3/0/8/130814597/fadurukatenuravu.pdf
    • http://files.thechurchinindianapolis.net/uploads/1/3/1/4/131483201/d910e8.pdf
    • http://files.469bce.com/uploads/1/3/0/8/130814127/givezanudabamexij.pdf
    • http://files.richmondneighborhoodrestoration.org/uploads/1/3/1/4/131452838/9337974.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/metoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/king_5_programming_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/51592503653.pdf
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/q13_news_anchors.pdf
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/35068496283.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7475/files/mirogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/zerapozodaluxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9507/files/asepsia_y_antisepsia_en_cirugia.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1185/files/color_manga_pages.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/74851306354.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/juvorejudemobepi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/55282224190.pdf
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/sagojuzoxaguvad.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a533.bin
0bea603ba4061fe5651f767d5fbe8022d4d71c0bea53a7735c7cbbb13db2062e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA533 5296 bytes
font_01_sfnt_off0000b734.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB734 1800 bytes
font_02_sfnt_off0000bfc1.bin
17ac2e521e9c657b9c140672c78a068f007eece0276cd980b8b8729c3c1292ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC1 11856 bytes
font_03_sfnt_off0000e67b.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE67B 16312 bytes

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