Malicious PDF — malware analysis report

Static analysis result for SHA-256 981f28183465991b…

MALICIOUS

PDF

39.3 KB Created: 2020-08-14 13:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41dd215355721f33afc3c1c2eaacfd77 SHA-1: f8781e3d09b7a66d572c2075b46f3e911904f152 SHA-256: 981f28183465991bc6d7bd0e09366fe91223dc664a82ca1851386e8657442af3
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=water+cycle+for+2nd+grade+worksheets', suggesting a lure to a malicious site. The presence of many Shopify links, while individually benign, contributes to a link farm pattern. No scripts were extracted, but the PDF structure and embedded links indicate a social engineering attack to redirect users to malicious infrastructure.

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=water+cycle+for+2nd+grade+worksheets
    • http://files.sunderlandpottery.com/uploads/1/3/0/9/130969402/pafokazok-suxixutifi.pdf
    • http://files.alzglassandiron.com/uploads/1/3/1/8/131872238/muludusi.pdf
    • http://files.makingspacesacred.com/uploads/1/3/0/9/130969426/koremif.pdf
    • http://files.micheles-musings.com/uploads/1/3/1/4/131406403/gekesinifus_kiritebed_nowezemaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/gogowevelegowifagib.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/juleguzosabigufag.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9992/files/pugumobubakisos.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/palovonifidekaraxodoxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niroduwo.pdf
    • https://cdn.shopify.com/s/files/1/0447/0249/8970/files/bracing_masonry_walls_during_construction.pdf
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/statistics_short_notes.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/xawufowuju.pdf
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/apprendre_l_arabe_dbutant.pdf
    • https://cdn.shopify.com/s/files/1/0430/5770/9210/files/drawing_electron_configuration_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/3816/9498/files/11_batho_pele_principles.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/bacillus_thuringiensis_plagas_que_controla.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_off00005a0d.bin
5fe0f092835e1504fc9635ea326018d4beb6da5ed7babdfc5f4e696c4f187f9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0D 5684 bytes
font_01_sfnt_off00006d8b.bin
609189f65c47a6a8b0be14a2c6930ced4ffc8f220e58ca614f988240140a5a73
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 10196 bytes