Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a98c5b2a34886f0…

MALICIOUS

PDF

46.6 KB Created: 2020-09-06 05:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c7a5badd0a1077f9429a0b04e7f9130 SHA-1: 552eae17a9df241785494cf568eb13c00b3d5eae SHA-256: 1a98c5b2a34886f0808ae4802342375fa246270d080c1fa1ff3a6f26f8bbd23e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=broselow+pediatric+emergency+tape+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being to a Shopify domain. The document body, though heavily obfuscated, contains text related to 'Broselow pediatric emergency tape pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious redirection.

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.link/wix?keyword=broselow+pediatric+emergency+tape+pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6384/files/5037635007.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/nugenamupixuruwulubopep.pdf
    • https://cdn.shopify.com/s/files/1/0435/0253/4822/files/american_slang_words.pdf
    • https://cdn.shopify.com/s/files/1/0450/4079/5806/files/propiedades_de_la_semilla_de_moringa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6481/9874/files/18728005411.pdf
    • https://cdn.shopify.com/s/files/1/0437/1005/4554/files/22504325426.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/buliw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vujunuvitiwowus.pdf
    • https://cdn.shopify.com/s/files/1/0439/4267/4587/files/acc_aha_hypertension_treatment_guidelines_2019.pdf
    • https://cdn.shopify.com/s/files/1/0440/7905/5000/files/jarumopodigop.pdf
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/aha_bls_cpr.pdf
    • https://cdn.shopify.com/s/files/1/0448/5169/1681/files/scratch_pacman_tutorial.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_off000068e1.bin
c005a00036da163a6b0612f5ccdd67e031aa1eb4b369bbd66f1760df421e6122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E1 5508 bytes
font_01_sfnt_off00007b9e.bin
1c49abd37d50ac873ed1223e8e5dae45918efc49e748897b7e73af7212255226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9E 10440 bytes
font_02_sfnt_off00009f5d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5D 4324 bytes

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