Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede30e775f9927ad…

MALICIOUS

PDF

37.6 KB Created: 2020-08-23 23:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b11b3d3968d0763242000a4a96915837 SHA-1: be48698ed3c7aee5fedff9b3641eecfe7212653e SHA-256: ede30e775f9927ad9b62adac2f132f084f57928d1961bab135a013597e79506e
150 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 external resources, characteristic of a link farm. One of these links, 'https://ttraff.com/pify?keyword=adanaspor+formas%25C4%25B1+2018', is identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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.com/pify?keyword=adanaspor+formas%25C4%25B1+2018
    • http://files.kristoferthornton.com/uploads/1/3/1/3/131381471/livupijujefezij-zirusif.pdf
    • http://files.avistonlegion.com/uploads/1/3/2/8/132814097/412833.pdf
    • http://files.adelaidefamefestival2020.com/uploads/1/3/1/8/131857465/b6790d28966.pdf
    • https://cdn.shopify.com/s/files/1/0435/0253/4822/files/bmp180_pressure_sensor.pdf
    • https://cdn.shopify.com/s/files/1/0433/7742/6584/files/26298249240.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/add_and_subtract_fraction_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0437/0179/7019/files/addicted_2014_full_movie_480p.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/87507682658.pdf
    • https://cdn.shopify.com/s/files/1/0437/0645/0074/files/sirarusufatixadiruj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/english_comics_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0942/5056/files/because_beatles_satb.pdf
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/67125972862.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7904/files/disunugiwek.pdf
    • https://cdn.shopify.com/s/files/1/0432/2361/3595/files/1504584149.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004621.bin
b6357e1835b688f8d3a7a294d8e8ba166c6d6fa1a3d057fa64755b44f82b1145		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4621 5236 bytes
font_01_sfnt_off000057c3.bin
4a378e8dfb02ff0aa37a2ccd0ea99b07dee238d5ecd40badda192b6a2f6babe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C3 10824 bytes
font_02_sfnt_off000079c5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C5 4324 bytes

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