Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df479eafeafeff0…

MALICIOUS

PDF

46.1 KB Created: 2020-09-09 02:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47a1e09f39e2102184ed71c013c1a079 SHA-1: 442c21eed2100c93e6e26eb13f5c652cce922737 SHA-256: 6df479eafeafeff0c1b7c77882235a0a501b83729d2af358f856dcf6e29ac65f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.me/wix?keyword=cycling+clothing+guide+temperature'. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=cycling+clothing+guide+temperature
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/29177147783.pdf
    • https://cdn.shopify.com/s/files/1/0428/5533/4055/files/ubuntu_mount_virtualbox_shared_folder.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/36867196358.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/21741114987.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/65743011358.pdf
    • https://static.usrfiles.com/ugd/0cd019_779caa41ad1b43ca956e715467dd221e.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_75cac8d9c28243aeb8886d88cf6fb406.pdf
    • https://static.usrfiles.com/ugd/63022f_6a47fb0a61a34033be2ee41635c55309.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/74753284895.pdf
    • https://cdn.shopify.com/s/files/1/0439/3854/5819/files/itemized_business_expenses_template.pdf
    • https://cdn.shopify.com/s/files/1/0440/7584/3736/files/26625391471.pdf
    • https://cdn.shopify.com/s/files/1/0462/4970/5621/files/vcredist_64_bit_windows_10.pdf
    • https://static.usrfiles.com/ugd/e2c250_470d943f8d8c41d5bf72f7b8410b6459.pdf
    • https://static.usrfiles.com/ugd/1a89c8_6ec77d2798414898b0e2683d4af70b79.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006874.bin
da79a529a120cf453600464d03f7c48a5a961c2251615d013d79054f94c5263e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6874 5316 bytes
font_01_sfnt_off00007a55.bin
36a1811957e0545ce58a5375a61f6a26446b6342d30b0d58ea6679aa1a9d9a43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A55 10192 bytes
font_02_sfnt_off00009d2f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2F 4324 bytes

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