Malicious PDF — malware analysis report

Static analysis result for SHA-256 cabdd8bc4db7815e…

MALICIOUS

PDF

57.5 KB Created: 2020-08-13 18:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a9c5888ce8522ef4edf3438dfd537f SHA-1: 6e3ae8f3f5553c7339d01d3627813c3e69cdfdd4 SHA-256: cabdd8bc4db7815e20a8327608e9f05a417cde76df5ce03a92d5a6a6e32a7b27
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, specifically pointing to 'https://ttraff.cc/wb?keyword=perovskite%20led%20pdf'. This URL is embedded within the document body, suggesting a social engineering lure related to 'perovskite led pdf'. The file also exhibits characteristics of a link farm, with numerous external PDF links, further indicating an attempt to drive traffic to potentially malicious sites. No scripts were extracted, and the document body itself is heavily obfuscated, but the primary malicious intent is clear from the redirector URL.

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/wb?keyword=perovskite%20led%20pdf
    • http://penetixu.sailonsounds.com/uploads/1/3/1/4/131453698/novovivifopo.pdf
    • http://files.plutorules.com/uploads/1/3/1/1/131164252/notefimeka_galawedor.pdf
    • http://files.agroecologyhub.info/uploads/1/3/2/7/132740594/6552854.pdf
    • http://files.davinci-clinic.com/uploads/1/3/0/8/130873961/wefun_fisipobaja.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/8533192656.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/84199415009.pdf
    • https://cdn.shopify.com/s/files/1/0436/0300/1502/files/55187163667.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/cancer_gastrico_borrmann_iii.pdf
    • https://cdn.shopify.com/s/files/1/0451/1108/3160/files/shinobi_origin_trello.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/tabla_de_numeros_primos_del_1_al_10000.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/wordly_wise_book_9_lesson_7.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/26173327737.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/cashflow_101_game_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5586/files/bell_palsy_exercises.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_off00008a54.bin
d3967b9d3f0dc7684cd7d74935105d566cb40a4db273e7f667d6f8f816861762
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A54 4952 bytes
font_01_sfnt_off00009b48.bin
cb6e668d10dd8681c8fcdb522eac72618343e1778e762fedaf227f328bc8ed11
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B48 11116 bytes
font_02_sfnt_off0000c09d.bin
9605cbd26af1344ff699f24a1baa1cc0d6f612157c64674cace4ad90e2237248
pdf-font-stream PDF embedded font (sfnt) at offset 0xC09D 16936 bytes