Malicious PDF — malware analysis report

Static analysis result for SHA-256 598d3454fc64c1d6…

MALICIOUS

PDF

53.8 KB Created: 2020-08-07 16:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72606cb1392d57ac23c322ac00c62b31 SHA-1: fdc27fde4058f269eb742cd22ccdfa9aafb1aa99 SHA-256: 598d3454fc64c1d6f43cfb3f40fc50f31ce28dd41e0ecd59287410ca21e07935
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL is 'https://ttraff.ru/pify?keyword=buyer+personas+book+pdf', which likely serves as a lure to a malicious site. The document body text and embedded URLs suggest a social engineering attempt to trick users into clicking malicious links under the guise of providing a PDF. No scripts were extracted from this sample.

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=buyer+personas+book+pdf
    • http://files.intouchfr.com/uploads/1/3/2/6/132683000/wekejoxosebix_loxas_vapipuwewinodi.pdf
    • http://files.cherrybyazhar.com/uploads/1/3/1/4/131483009/982774e4d18aae.pdf
    • http://files.codlimo.com/uploads/1/3/0/7/130739537/jesijozilekexelin.pdf
    • http://files.melissatisonart.com/uploads/1/3/1/0/131070394/363629.pdf
    • https://cdn.shopify.com/s/files/1/0439/7219/8558/files/60034360522.pdf
    • https://cdn.shopify.com/s/files/1/0436/1617/4237/files/64785724314.pdf
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/wordly_wise_3000_book_8_lesson_11_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/49494742366.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/revemidusilodeloram.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/nosasenojenobiperorixo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/86993951071.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/lanajoguxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/restaurant_swot_analysis_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/9778/3458/files/zenilepogopowe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/foralozevixug.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/15915119070.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/soxesufonaj.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_off00008747.bin
0613b37983d9a118d5b2793e10d23fa25c1199149701a789c2e321ebbc271c9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8747 5112 bytes
font_01_sfnt_off000098b3.bin
158a4f8884c62e8da56c89bd2599f3782ae6f871d75d9a1dcf73c3873e287ff3
pdf-font-stream PDF embedded font (sfnt) at offset 0x98B3 10456 bytes
font_02_sfnt_off0000bc58.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC58 4324 bytes