Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d95baab57b0a885…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 15:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 413bf4f4c885017c306d4fad0db18da3 SHA-1: c7e3622d991f2f38e44e86e0afed44cded02709f SHA-256: 8d95baab57b0a88598ba662b9d2f650db16ab29715ef14c157ed5f5eb4989105
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is presented to the user as a free watercolor texture kit. This link, 'https://ttraff.cc/pify?keyword=watercolor+texture+kit+free', is designed to redirect users to further malicious content. The document also contains a link farm of numerous other PDF files hosted on Shopify, indicating a potential attempt to broaden distribution or mask malicious activity. 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.cc/pify?keyword=watercolor+texture+kit+free
    • http://files.obpassociation.com/uploads/1/3/1/6/131606923/5db77eac.pdf
    • http://files.hawksquadron.nhcapcadets.org/uploads/1/3/0/7/130775834/7518835.pdf
    • http://mekezojo.talkingaboutteaching.com/uploads/1/3/2/6/132695925/80ae563344e.pdf
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/parojijazojetotowekij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/python_dash_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/0465/5773/files/dademarubiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/kanipej.pdf
    • https://cdn.shopify.com/s/files/1/0435/4755/8037/files/the_thyroid_solution_diet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5922/4480/files/xadelegederimitirig.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/notafuxoguwupamo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/24480194059.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/discipleship_bible_study_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/41573251463.pdf
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/83370716700.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/miss_oregon_inlet.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4760/files/majoras_mask_gamecube_rom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/sumuvumotixulujifomu.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_off0000622f.bin
85bb04387c309c8f577e70834df3685e3e929357b584cc668bf938cd5cee9f27
pdf-font-stream PDF embedded font (sfnt) at offset 0x622F 4840 bytes
font_01_sfnt_off000072c3.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 1800 bytes
font_02_sfnt_off00007b4f.bin
a0abfd7c2cd5952f007d005d7c50d9e1e5bf7f0975b772c608319e1ec18af4ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4F 9948 bytes