Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7de0ada16e475a8…

MALICIOUS

PDF

44.7 KB Created: 2020-08-17 01:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7ee062f61a862aafc3f71ee1eb7c507 SHA-1: 5a41ce6979fc185bf0b9405429fd84c946abd950 SHA-256: c7de0ada16e475a8bf3e82af89a6e0fbf8a6551a9ce4dc03f0b4c04fccaf72c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to payment applications, specifically mentioning 'cash app apk file'. It also features a high number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. The primary malicious indicator is a link to 'ttraff.com', identified as a malicious redirector, which likely serves to deliver the payload. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=cash+app+apk+file' and other PDF links.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=cash+app+apk+file
    • http://files.lifestylefrugalist.com/uploads/1/3/0/9/130968993/2877159.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/lojaranumosazefuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6994/7555/files/66581344007.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/the_authenticity_paradox_hbr.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9639/files/cv_template_online_maker.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/42105464777.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/descargar_libro_para_aprender_ingls.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/51607536579.pdf
    • https://cdn.shopify.com/s/files/1/0432/8770/7804/files/grade_12_university_chemistry_textbook_nelson.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/cpa_exam_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/ponuwukizulabemozome.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055ae.bin
2d874b6316b7d46ade06b699838f7acd2266a98e5d6c000df17b1f4e8c29a97e
pdf-font-stream PDF embedded font (sfnt) at offset 0x55AE 4472 bytes
font_01_sfnt_off000064db.bin
d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd
pdf-font-stream PDF embedded font (sfnt) at offset 0x64DB 6068 bytes
font_02_sfnt_off0000748c.bin
db78089b7b0f1f666441c4f1add55463f334b52465f0b8a12e584dca1776116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x748C 10440 bytes
font_03_sfnt_off00009802.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9802 4324 bytes