Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcc2a0ff6e3362f…

MALICIOUS

PDF

46.1 KB Created: 2020-08-15 03:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b0e6d9dec659ba140e29d3619bedf6 SHA-1: 930fcb475706c83cb4e21caea41da0b36420d432 SHA-256: 2fcc2a0ff6e3362fc839e2eebc878f8ed72c4f88ddde6396128cd7d606d14d63
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=system%20thinking%20approach%20pdf'. This indicates a phishing or redirection attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, suggesting an attempt to obscure the malicious destination. No scripts were extracted from this sample, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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.cc/wb?keyword=system%20thinking%20approach%20pdf
    • http://files.intsangano.com/uploads/1/3/1/4/131483685/fojig.pdf
    • http://files.myphotobookclub.com/uploads/1/3/0/8/130814774/ruputivarupetaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/vida_y_doctrina_de_los_grandes_economistas.pdf
    • https://cdn.shopify.com/s/files/1/0432/9052/5849/files/47243032529.pdf
    • https://cdn.shopify.com/s/files/1/0438/1330/6530/files/car_games_steering.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/88943847297.pdf
    • https://cdn.shopify.com/s/files/1/0430/9791/5545/files/generic_statistical_business_process_model.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/arithmetic_sequence_word_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/aditya_birla_health_insurance_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/learning_spanish_basics.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/metajebufun.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/physics_formulas_for_class_9_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8720/files/vubolekujo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/saint_young_men_movie.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_off00007324.bin
8b68ae140103671123d537e1d1d0c76a0a76643228703a3bcb7d953ead777e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7324 5808 bytes
font_01_sfnt_off000086c3.bin
2b81884b036fe7b8332da73a66db703bf41fa956e607396ad18e292cd0be7fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C3 10300 bytes

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