Malicious PDF — malware analysis report

Static analysis result for SHA-256 b22c73882ebbafb4…

MALICIOUS

PDF

42.7 KB Created: 2020-09-01 09:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02998f760aa5460b49e780c127c1c483 SHA-1: a8752c72b0cf2c876f4a9abe429ea4ae5c8360bd SHA-256: b22c73882ebbafb472f84a9bdca1ec64b51e1783234371dedc14444985945e10
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.me/wix?keyword=freehold+power+leveling+8.+2+guide', is the primary indicator of malicious intent. The document also exhibits characteristics of a link farm, with numerous embedded URLs, including one pointing to 'https://cdn.shopify.com/s/files/1/0437/7755/6629/files/loader_daz_windows_7_download.pdf', suggesting a potential secondary stage of delivery or a broader distribution effort.

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.me/wix?keyword=freehold+power+leveling+8.+2+guide
    • https://cdn.shopify.com/s/files/1/0437/7755/6629/files/loader_daz_windows_7_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/catalogue_of_unabashed_gratitude.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/variance_analysis_report_definition.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/suxajefos.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/72143932041.pdf
    • https://cdn.shopify.com/s/files/1/0438/4686/0960/files/case_study_research_design_and_methods_robert_k_yin.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/fibalizazajigamajuwobojoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/ftb_legacy_launcher_download.pdf
    • https://cdn.shopify.com/s/files/1/0462/4442/9984/files/xafusemux.pdf
    • https://cdn.shopify.com/s/files/1/0439/0574/5051/files/9177757385.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/nazelitiwaxajibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9966/files/92837205812.pdf
    • https://cdn.shopify.com/s/files/1/0432/7918/8118/files/pusoseruvux.pdf
    • https://static.usrfiles.com/ugd/6cfc61_364f595cab354863b4572096383ead47.pdf
    • https://static.usrfiles.com/ugd/857e61_38efffdb47644f90a27f5850709d39ad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b22.bin
e8ed7b5e3342effcb6ca5185a5a80ec464efb791dd05c6bf1ab3e42470e3094f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B22 5100 bytes
font_01_sfnt_off00006c82.bin
6440ed85c8b5706daf439116b1997cdf5d90697da4763109594484ecc867238c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C82 10280 bytes
font_02_sfnt_off00008faa.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 4324 bytes