Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6bd1c907aa80fa1…

MALICIOUS

PDF

57.7 KB Created: 2020-08-24 00:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 449e937b823a2217f2c0b60e5aaea45e SHA-1: c9b2a4009f4c84c892dfec47408a86f3e52e5065 SHA-256: e6bd1c907aa80fa1caa78e4b678bafc88b02d6ad1f680a337209032d31fa2c07
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=b.+a+llb+form+2019'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0435/9795/5229/files/zifoxal.pdf' being one of the first identified. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to a malicious site under the guise of a legal form.

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=b.+a+llb+form+2019
    • http://files.matthewnunesmusic.com/uploads/1/3/0/7/130739284/xugajutesifi-peliwuvutufitol-papoxus.pdf
    • http://files.natasha-biggs.co.uk/uploads/1/3/1/4/131454791/2543048.pdf
    • http://files.ardsleypta.org/uploads/1/3/2/6/132695915/5a2a7fec33eb8.pdf
    • http://vedaworu.cdsacademy.co.uk/uploads/1/3/1/3/131378776/rafizik.pdf
    • https://cdn.shopify.com/s/files/1/0435/9795/5229/files/zifoxal.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/80361317290.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/kifopowidevavomovodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/2151435432.pdf
    • https://cdn.shopify.com/s/files/1/0436/7931/8166/files/addition_subtraction_multiplication_and_division_of_fractions_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/wifagowiluditivus.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/ginukitebe.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/20863294988.pdf
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/barakhadi_in_english_to_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/kotirobexawewi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1477/files/belladonna_of_sadness_movie.pdf
    • https://cdn.shopify.com/s/files/1/0435/0391/1076/files/zogezetevifix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/active_learning_strategies_list_pdf.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
stream_005_off0000bb16.bin
58234e0bae4cccb55e7976d87bc7f3f1b7d02b4da3ca9123b4e7e4d5a9986b75
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBB16 9568 bytes
font_00_sfnt_off0000798c.bin
989cb641cc32b44fd0e504f3e64493c1519e6f876c9c77734a50a6b7e890468d
pdf-font-stream PDF embedded font (sfnt) at offset 0x798C 5436 bytes
font_01_sfnt_off00008bf7.bin
065cc81f9a6b8641edbf1440d404fc1703d7f306c907b3b83c92e52cc8895d9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF7 15208 bytes