Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62ed67d6198b986…

MALICIOUS

PDF

43.6 KB Created: 2020-08-12 01:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0078d27c690c3c4cdc2a4f7dee845888 SHA-1: a49dfdb2c8a762f9eb29eccae563028a94417715 SHA-256: b62ed67d6198b9868b54972e9f761bbbe0f9fdca863ea2115f5507993e54667c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/wb?keyword=jtag%20spec%20pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'Jtag spec pdf'. The presence of a large number of external PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=jtag%20spec%20pdf
    • http://files.ravensfieldhockey.org/uploads/1/3/2/6/132681201/8996768.pdf
    • http://zeruxeko.educarechildrenscentre.com/uploads/1/3/1/8/131856257/8679414.pdf
    • http://jirir.su649.org/uploads/1/3/1/3/131380600/zupituje-jalovobesebafe-jowaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/partnership_agreement_template_uk.pdf
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/a1275_transistor.pdf
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/organisational_behaviour_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/tenetamaroravefi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/baligobesupuxerufo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5900/9943/files/btec_applied_science_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/8477/4552/files/nuparadul.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/18520349503.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/install_wow_addons.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/27741516093.pdf
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/importance_of_english_in_multilingual_society.pdf
    • https://cdn.shopify.com/s/files/1/0435/4578/8584/files/mepowoke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39843759369.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4668/files/brazilian_jiu_jitsu_for_beginners.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_off00006e1d.bin
b7f3afd6cd6ba5f2a8b9f145a797bbd2c6a65f31ffaa5f72e19667bd3daf32fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 5184 bytes
font_01_sfnt_off00007fd5.bin
d22ba4ebf7883d2fe7b19e59ee4ed8cf0e953b71b5716b8325db45878d003585
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD5 10052 bytes