Malicious PDF — malware analysis report

Static analysis result for SHA-256 3814101768da01d4…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 20:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 391bf188c68a03bd44c1a90ffc787b41 SHA-1: 1b3544b748a59c9c5f4f304991071850007de4cc SHA-256: 3814101768da01d4ba984e035dcb43297f09a7d1d8d0995c7c8fda2452157f06
128 Risk Score

Malware Insights

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

The PDF file contains a lure for 'Aspen guidelines summary' and urgency language, indicating a phishing attempt. It embeds multiple links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body also contains numerous links to Shopify, likely part of a link farm to improve SEO for malicious content. No scripts were extracted, but the primary malicious activity appears to be redirecting users to malicious infrastructure via embedded 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=aspen+guidelines+summary
    • http://kilufax.stdavidandstmair.co.uk/uploads/1/3/2/6/132696323/nozejanitad-makisi-wupaxusikut-jajekejumugamo.pdf
    • http://files.linhr.com/uploads/1/3/1/0/131070189/tabotusatoboza.pdf
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/coreldraw_x4_full_version_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/free_customer_journey_map_visio_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/judavup.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/onan_generator_repair_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/auto_body_repair_technology_5th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/excellence_in_business_communication.pdf
    • https://cdn.shopify.com/s/files/1/0430/6518/0321/files/1160239399.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/38639518334.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/91988516814.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/navav.pdf
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/91235896977.pdf
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/aashayein_ringtone_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/april_2020_current_affairs_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/body_parts_activities_for_preschoolers.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/
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061fe.bin
5e34b60e3b71a82e10478aa36a627b0918dd6d7294dfe6af8e615d4d9cfe7dfb
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 5368 bytes
font_01_sfnt_off00007426.bin
b10bd9b027565445a305157570096277bab1a961e228a38f432f332eed31f260
pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 10260 bytes