Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e5b35abc2bfaa3…

MALICIOUS

PDF

55.8 KB Created: 2020-09-01 22:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf28e64f69571021e136532bfd0d9375 SHA-1: ccd1dc0fb0ba77a02c927e46de6cb37b3f28b130 SHA-256: 00e5b35abc2bfaa3652608045b57bad6caee37f5c1bd6ce7e0cfc088896e5cb1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.link, which is designed to lead users to malicious content. The document body and embedded link structure suggest a lure, possibly related to search engine optimization (SEO) link farms, aiming to trick users into clicking the malicious URL. The presence of multiple embedded links, many pointing to Shopify, further supports the SEO link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.link/wix?keyword=ballarat+tv+guide+yahoo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0441/2129/2952/files/jungle_stalker_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0434/4161/9105/files/php_curl_get_headers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/ffxi_geomancer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0462/5756/9946/files/tobumadi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/ielts_listening_band_9.pdf
    • https://cdn.shopify.com/s/files/1/0445/2355/2927/files/high_school_vocabulary_activities.pdf
    • https://cdn.shopify.com/s/files/1/0427/9789/1751/files/viridenedevotesidebuli.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/varupavis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0627/9323/files/biwufafizizerebitasefom.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/59932790880.pdf
    • https://static.usrfiles.com/ugd/c63dba_eb23c29396344c0fa453d0f66d66a804.pdf
    • https://static.usrfiles.com/ugd/58a813_bae4e8ea53a3487bb7405a61b7cb693d.pdf
    • https://static.usrfiles.com/ugd/1ee69b_1cbf0d12acdd4214a106af65c12a3213.pdf
    • https://static.usrfiles.com/ugd/3ce946_4c9f3f8a097f4079b0195e9389b7b3e4.pdf
    • https://static.usrfiles.com/ugd/9c43ec_9b3ec5067e014afeb671ae8e1f6fa21d.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_734a751579de4effa6be7ffc39b29562.pdf
    • https://static.usrfiles.com/ugd/db93e9_c8d2388a698248b9b4734d216c69eb36.pdf
    • https://static.usrfiles.com/ugd/086daf_ba04dbac7fd946228666fe8af088c68f.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a7f.bin
82e4c6fa602cbae6a81c83e42d9e5d01f9210303e83192829d1fd5c087459aba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7F 4896 bytes
font_01_sfnt_off00008b3b.bin
dc37461816ec92f0ed1316601fd5c6b06f5c1a5be203c138b3c3c6cdf5da3806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3B 2024 bytes
font_02_sfnt_off000094d3.bin
609de24db99fd73bfc648317e694d0c744022ad35ad84f2730c576e86edd6f37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D3 15168 bytes
font_03_sfnt_off0000c320.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC320 4324 bytes

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