Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d0e86595e9cda6…

MALICIOUS

PDF

41.5 KB Created: 2020-08-09 13:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66f110cb04a7ea6d140b6a807f61dd0e SHA-1: 300a6a772ca218f21e9243a575f507525cbb377a SHA-256: 92d0e86595e9cda6a8943bd3eaee6ab4190c62dcde7502625b63dcc49247b3c5
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.com/pify?keyword=conjuntivitis+bacteriana+pdf+2020'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The presence of numerous other external PDF links, identified by the PDF_SEO_LINK_FARM heuristic, further supports a link-farming or redirection-based attack. 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.com/pify?keyword=conjuntivitis+bacteriana+pdf+2020
    • http://turevib.anabelaphotography.com/uploads/1/3/1/8/131871980/kuxujiririwiwavimofo.pdf
    • http://files.jocampbellnz.com/uploads/1/3/2/6/132695339/628186.pdf
    • http://files.reikilinetour2009.ca/uploads/1/3/1/3/131379615/taregemazosero.pdf
    • http://files.fearnoopera.com/uploads/1/3/0/8/130813510/zudemipexagijamagub.pdf
    • http://files.mindhealthconnection.org/uploads/1/3/1/1/131164313/497535.pdf
    • https://cdn.shopify.com/s/files/1/0431/5571/8298/files/34179995711.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/zalav.pdf
    • https://cdn.shopify.com/s/files/1/0438/3077/1869/files/que_es_el_analisis_foda_personal.pdf
    • https://cdn.shopify.com/s/files/1/0432/8764/2270/files/free_6th_grade_common_core_math_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/88342602189.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6397/files/79709531382.pdf
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/83967066087.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/9922159263.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/no_oyes_ladrar_los_perros.pdf
    • https://cdn.shopify.com/s/files/1/0437/4550/9537/files/napa_deep_cycle_battery.pdf
    • https://cdn.shopify.com/s/files/1/0436/1306/1277/files/11263277370.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/50338659119.pdf
    • https://cdn.shopify.com/s/files/1/0439/1872/1192/files/lujisudawodisujekosabuloj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/asme_section_viii_division_2_part_5.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_off000062da.bin
3e505b459ac26157beeadef074a145e598b0efb5b009b9e4e9cc671ee849ed78
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DA 5572 bytes
font_01_sfnt_off000075de.bin
f1928f38662e24980e8d505876fc693d5d8be44c6e57ec7dc53ac770cc09d47a
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DE 10292 bytes