Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e68955913f1dd9…

MALICIOUS

PDF

114.4 KB Created: 2020-08-30 05:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731c4e375b967b73a14b75242abb735d SHA-1: 77de145670a51c87142b78f398081646c106bab2 SHA-256: e7e68955913f1dd9aac8fc5b45910717d645df4c3f1799318907b26aa6092ceb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=cuaderno+de+trabajo+de+matematicas+5+secundaria+respuestas+santillana+2019'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one to 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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/wix?keyword=cuaderno+de+trabajo+de+matematicas+5+secundaria+respuestas+santillana+2019
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/commas_in_a_series_worksheets_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/natikimamebi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8321/8588/files/sistema_sexagesimal_centesimal_y_radial.pdf
    • https://cdn.shopify.com/s/files/1/0432/8118/6971/files/2011_challenger_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/0316/2269/files/cestui_que_vie_act_1666_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0447/0842/9977/files/manual_de_auditoria_ambiental_tcu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/98865180316.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/backup_android_to_sd_card_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/8090443468.pdf
    • https://cdn.shopify.com/s/files/1/0433/5173/6488/files/fundamentals_of_engineering_economics_3rd_edition_chan_s_park.pdf
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/andhra_bank_account_statement_password.pdf
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/hungry_dragon_mod_unlimited_money.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/wesesurivevixixamaboteluf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3902/files/43998367464.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/qu_son_los_glcidos_no_asimilables.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_off00017008.bin
d40f160dba6b5ed076f5735dbfcbfcc4384ce73496fb8c0944416d2155fd4ef5
pdf-font-stream PDF embedded font (sfnt) at offset 0x17008 5948 bytes
font_01_sfnt_off00018430.bin
90800a5d9e17f0bc24e08207ea3bc47c7b5da23f02c72a0f5619be15e496ce3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x18430 12032 bytes
font_02_sfnt_off0001ab0f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB0F 4324 bytes