Malicious PDF — malware analysis report

Static analysis result for SHA-256 aacb4083e69f9589…

MALICIOUS

PDF

48.8 KB Created: 2020-08-30 14:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72875bb2e369ea78965ca079fa152c60 SHA-1: 174a7d847b8b72bbbde30e708a8fce8d9ed18ca8 SHA-256: aacb4083e69f9589f14c5f38bc3b73237d9dfdb45e6828555485f6593b025041
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=best+budget+graphics+card+2019'. This URL is presented within the document body, disguised as a search result for graphics cards, indicating a phishing or scam attempt. The file also exhibits characteristics of a link farm, with numerous external PDF links, though most resolve to benign content. No scripts were extracted from this sample.

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.me/wix?keyword=best+budget+graphics+card+2019
    • https://cdn.shopify.com/s/files/1/0437/1759/1189/files/aerodynamics_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/antissepsia_e_assepsia.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/wordly_wise_book_8_lesson_15_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/60589431261.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/setowejopuwogulavonemitu.pdf
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/90954034900.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/wozodora.pdf
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/91567327073.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/neduxovowumodolukivu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4782/9156/files/36122070456.pdf
    • https://cdn.shopify.com/s/files/1/0431/2239/3244/files/28809551532.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/atriplex_halimus_algrie.pdf
    • https://cdn.shopify.com/s/files/1/0435/1767/3636/files/ls_command_in_linux_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61051106257.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/ib_chemistry_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/3274/5896/files/92199398399.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_off00007df6.bin
721b12bb233e61210ef6c307b449dafaf48e2acec710bd56976a95ae88ec7cc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF6 5972 bytes
font_01_sfnt_off0000923e.bin
b0b9653d4e925d7a24edcc8f37826ebbd9f2ef594fcb3c3e515dbb9d882d5f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x923E 10504 bytes

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