Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac15eca359eaf7f8…

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 11:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44407c42cb1edb1b81d632d760886378 SHA-1: 6df999bdd31de3f2481b3af70967c7a5ab195128 SHA-256: ac15eca359eaf7f878cbad5ad9c7090a15b093372af5b46be02c6aa5f0d277f2
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to a "Toyota corolla 2012 owners manual" and embeds a link that redirects to malicious infrastructure. This indicates a phishing attempt designed to trick users into visiting a harmful site. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve SEO for the malicious redirector.

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.ru/wix?keyword=toyota+corolla+2012+owners+manual
    • https://cdn.shopify.com/s/files/1/0431/0797/5335/files/tobomubosaxusigini.pdf
    • https://cdn.shopify.com/s/files/1/0431/8786/3715/files/chrome_store_facebook_video_er.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/39352553599.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/40623733854.pdf
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/abbyy_gz_format.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/git_checkout_remote_branch.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/biblia_cristiana_de_estudio.pdf
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/pocket_guide_to_critical_appraisal.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5187/files/angina_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/53492520429.pdf
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/59055217169.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/89696354224.pdf
    • https://cdn.shopify.com/s/files/1/0428/5795/5494/files/school_accountant_experience_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/free_illustrator_t_shirt_templates.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/past_simple_vs_past_continuous_exercises_autoenglish.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_off000065e0.bin
d4f62425008135b955beeb551c72abbb3f8c7a44bb74d6b691d497f99a7542b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E0 5412 bytes
font_01_sfnt_off0000784b.bin
2bbe53afe4f7c59d8f890954a261f2bfadb70b52ad6861012f1e369bf34c4c1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784B 10212 bytes

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