Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a5112ec96caf01…

MALICIOUS

PDF

42.2 KB Created: 2020-09-10 21:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb34de1a41c53f139ef9921261fab51b SHA-1: 038f81de4191327091c30c90d5c58b0fd6e6aef3 SHA-256: e9a5112ec96caf0120f2d3f63595e722a5f15547a6f7bef489a99d37e4a5f565
140 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One prominent link, 'https://ttraff.me/wix?keyword=battery+tender+lithium+junior+manual', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the lure to click on external content. The presence of a callback phishing lure heuristic further supports the interpretation that this document is designed to trick the user into interacting with malicious infrastructure.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=battery+tender+lithium+junior+manual
    • http://satagug.ashleyscleaningservice.org/uploads/1/3/1/3/131379394/35ae3384.pdf
    • http://files.adremllc.com/uploads/1/3/1/4/131406182/fadenemebagufo-bokesivu.pdf
    • http://files.pegasusclinics.com/uploads/1/3/0/8/130814101/rapigesugerujo.pdf
    • http://files.realisto.net/uploads/1/3/0/9/130969967/25c7e8b2a7c8e.pdf
    • http://files.mossyrockfarm.ca/uploads/1/3/0/8/130814387/jegulubijazarovevu.pdf
    • http://files.northmayohorsesanctuary.com/uploads/1/3/2/6/132681210/nevonamapiga-wisafukowuwumij-sagomas-wawudivawe.pdf
    • http://rifefax.lindveit.com/uploads/1/3/1/4/131407057/0304da0ad8e3d.pdf
    • http://ledifaro.simplycreativetreasures.com/uploads/1/3/1/6/131606271/25a91937a.pdf
    • http://rufuranav.philmancusi.com/uploads/1/3/2/7/132710714/degotuvi.pdf
    • http://files.meadowbrookwellness.com/uploads/1/3/1/3/131381901/kegolixujoboxikunate.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/85430636742.pdf
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/cute_cartoon_monsters_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6953/files/app_store_connect_developer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/icici_bank_business_loan_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/3011/7542/files/present_perfect_past_simple_exercises_3_eso.pdf
    • https://cdn.shopify.com/s/files/1/0438/2529/9606/files/ansi_c_solution.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/non_probability_sampling_design.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/how_do_i_calculate_time_cards_manually.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/wukumadavofezame.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/polarized_test_image.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_off000066fa.bin
d4aaf27d59e5677ad144f599c9bb85cd457a6db4e0e22c2eee56361725a92823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66FA 5116 bytes
font_01_sfnt_off00007838.bin
fffeaa8808de8627484a89b4c85d75983c3a0166407f1fc817e0d0875c18dad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 10408 bytes

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