Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5b1ce80c22f949…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 15:33:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87aad75938dd31e11fcb4d8451570a53 SHA-1: cdec82f34df8e18d1dcec7710889786e4ee71657 SHA-256: 7c5b1ce80c22f949415cefacba0b6b3b7f5c31eef1631bdc19263d25535ef1c2
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=livro+de+neemias+hernandes+dias+lopes+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on potentially untrusted domains. The document body, though heavily obfuscated, contains references to URLs that are likely part of this malicious infrastructure. The primary intent appears to be redirecting users to malicious content.

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=livro+de+neemias+hernandes+dias+lopes+pdf
    • http://files.borntocreate.store/uploads/1/3/0/7/130740264/pekam.pdf
    • http://files.galafordreams.com/uploads/1/3/1/3/131398140/xipeg-sajag-nuzumi.pdf
    • http://files.oceanpinesmotel.com/uploads/1/3/0/7/130775784/fopezapudinowol.pdf
    • http://files.dancerscornerlr.com/uploads/1/3/0/9/130969800/2d05f76ffaf.pdf
    • http://files.selectstartpress.com/uploads/1/3/1/3/131383837/biwowo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/ecriture_alphabet_francais.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/fundamentals_of_css.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/84046089961.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5085/files/do_androids_dream_of_electric_sheep_summary.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/quimica_inorganica_atkins_4_edicion.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/range_guide_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/grade_12_physical_science_module.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/38672679070.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/45876941593.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/reactor_idle_save_editor.pdf
    • https://cdn.shopify.com/s/files/1/0440/9815/8744/files/66966763015.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/ragenovu.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_off00006705.bin
b97f6282c03bd52cda45e6717d76ae0713a61916a41865708382c08236c05ef6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6705 5284 bytes
font_01_sfnt_off000078d4.bin
5ccc0fbe12e68c2cdce31d7cbade777d06eed1bf0870e4d8ab23a12b5c61ccba
pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 12504 bytes