Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd6ce128005aad0…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 17:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6de922ab20507c3a44efe802219f4ad SHA-1: 2b6d46339bba716e8924b558e59bc2703cd7ea43 SHA-256: 7cd6ce128005aad0df8dd65f4c1db8dae200ba6c15a0a52c35fb956991a879db
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, embedding numerous links, many of which point to benign Shopify URLs but also include other unknown or potentially malicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.com/pify?keyword=concession+stand+menu+template
    • http://files.theshipmiami.org/uploads/1/3/1/4/131409761/5bff518c6b.pdf
    • http://fuvitij.nsuttles.com/uploads/1/3/1/4/131438096/5180644.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/2112536145.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4192/files/dch_file_ting_nht_sang_ting_vit.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/tudazuzemopedafisalu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7182/files/28941083050.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/1039847647.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/system_of_inequalities_word_problems_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/cockatiel_diet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/nifetekodikiko.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/96474478360.pdf
    • https://cdn.shopify.com/s/files/1/0432/5552/9640/files/numerical_solution_of_algebraic_riccati_equations.pdf
    • https://cdn.shopify.com/s/files/1/0432/5526/7496/files/riguf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/67012034280.pdf
    • https://cdn.shopify.com/s/files/1/0457/5615/4020/files/zepomusowuxat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a9.bin
c486ff62d890d8cc3e61adf811dad5ba5e5eec06aa8970381d4607aeb6321b55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A9 5028 bytes
font_01_sfnt_off000075a6.bin
dfcd657f34a44ae56c6d1c6e59e8abc6fbb7d7027bd24306026d4cb002870771		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A6 9900 bytes
font_02_sfnt_off0000978a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x978A 4324 bytes

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