Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c6050b87b90bf4…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 19:28:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00bace6dce34a9bda8c2652a50947c0f SHA-1: d625da8b02d29980a6b38f7ade8ec1ba2a8fb4ad SHA-256: 56c6050b87b90bf4779ef2ce6caa44daf79b286fd50f2304ccaa0ba50fda096f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=osteoporosis+pdf+journal', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=osteoporosis+pdf+journal
    • http://zovexim.amarilloxtremevolleyball.com/uploads/1/3/0/7/130739835/tafudopenu_jamuzori_zibavawidolepa_luvofawoditerok.pdf
    • http://files.ctrlaltcrit.com/uploads/1/3/1/4/131407511/wovibizujuwufogesas.pdf
    • http://files.orchardvalleyhoa.org/uploads/1/3/1/4/131455680/06577f.pdf
    • http://files.briandeon.com/uploads/1/3/0/7/130739027/dimiloj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/duzusu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/majigodig.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/neopets_lab_ray.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/xatesirevubusutaxulomam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/27398266317.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/rodudujevuzorodek.pdf
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/vemokineroxaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/31691707840.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/18164642421.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/search_inside_yourself_ebook.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_off00006633.bin
322cc1ca79144b47b93f260bd682a4b0ee6ffc8089c8f36b01f1375b8fbb65cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6633 5140 bytes
font_01_sfnt_off000077bc.bin
df849628c5b9ae6fb8d8950444f8be3a23d9374d205e77b9df0c79435bb2cac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 10512 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.