Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9cff38cdf4c6b5…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 06:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 581099e39f2982feaea59a0909988ed9 SHA-1: ac1be6de2fbd64543553c159bf2fc9315b5ddc6c SHA-256: eb9cff38cdf4c6b5b6def87d66e3dd555afe22dce4e3d5114bd590474d48bfb1
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a phishing or scam attempt, likely using the 'top linen bed sheets' keyword to attract clicks. The PDF structure and embedded links indicate a link farm or redirection strategy to obscure the final malicious destination. No scripts were extracted, limiting the analysis of direct payload delivery.

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=top+linen+bed+sheets
    • http://suzek.rosabransonandtheworlingtonmovement.com/uploads/1/3/2/6/132695306/fiwipezotepewireraxo.pdf
    • http://files.sculpturebylebowitz.com/uploads/1/3/1/4/131406684/gunev.pdf
    • http://files.scjmg.org/uploads/1/3/0/7/130775245/9b42150f6fa4b.pdf
    • http://files.anviltraining.co.uk/uploads/1/3/1/4/131438563/b447d67f1580.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0151/files/4110660028.pdf
    • https://cdn.shopify.com/s/files/1/0430/4673/1930/files/70697925638.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/free_responsive_email_template_bootstrap.pdf
    • https://cdn.shopify.com/s/files/1/0464/2494/8888/files/link_adobe_audition_3._0_full_crack.pdf
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/assembly_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/al_ghazali_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/rorasadejoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/6327/1833/files/heart_failure_preserved_ejection_fraction_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/kugepewekeliwimetulogodu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6126/3001/files/jailbreak_ios_5._1_1.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/daily_devotions_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0462/8637/3025/files/answers_to_close_up_pics_level_22.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/17247672308.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_off00006a02.bin
9c3759605f8738039b93d947b9e3b83973eb0a38ebe860223cb8d969d9deb6d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A02 4832 bytes
font_01_sfnt_off00007a60.bin
5e20a8af804b3e0365a49a86cedfc516c37af3a7aa21d65effb478eda0079c60
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A60 10344 bytes