Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8565d6135dd276…

MALICIOUS

PDF

45.3 KB Created: 2020-08-20 00:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c7a79e6aa9c37d6f40966ae46495755 SHA-1: 78140995e5a62ecc4f2523fe84c4f1da90bbd5f0 SHA-256: 1f8565d6135dd276caf278fd23330c81f9fbefbfa340267080613f61d2e5e768
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to benign content on Shopify. However, a critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The presence of numerous links suggests a link farm or SEO poisoning tactic to increase visibility and lure victims.

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/pify?keyword=organized+crime+lyman+pdf
    • http://nivezaj.gpbballstore.net/uploads/1/3/1/4/131455069/pujobomamaxoxuf.pdf
    • http://files.litzon.com/uploads/1/3/0/7/130739362/b19fb07f8663.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9267/files/ballerina_full_movie_with_english_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/81542022549.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/73112283582.pdf
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/solving_equations_with_fractional_coefficients_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/rupodulova.pdf
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/tubidy_mobi_mp3_download.pdf
    • https://cdn.shopify.com/s/files/1/0450/1300/8534/files/alphabet_anglais_avec_prononciation.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0437/8220/9698/files/very_british_problems_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/conjunction_worksheets_with_answers_for_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/20500267767.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/simple_biodata_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/66035095451.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_off00006519.bin
d8d0c3f0530335b5cce43024c141c9757c9e99c56a0edc1b92e33a3d1e77dea1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6519 5072 bytes
font_01_sfnt_off00007645.bin
b514c1911b90b3b8373e4af5a27104cc47fa6c035c132d69c84db34e9cba4267
pdf-font-stream PDF embedded font (sfnt) at offset 0x7645 10544 bytes
font_02_sfnt_off00009a48.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A48 4324 bytes