Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b09425d3e42251…

MALICIOUS

PDF

41.1 KB Created: 2020-08-31 19:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bc04dfb250e01bbf0cb1559e7060951 SHA-1: f79b9b9cb1a6bee7a4ed60a5d8341e1e2285fd4b SHA-256: f4b09425d3e42251953b68e60dc45111300246d5860bf0c67b237d935698c883
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=enhanced+due+diligence+report+sample'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links to other PDFs hosted on Shopify, a technique often used for SEO poisoning or link farming, with the primary malicious link being the most critical IOC.

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.com/wix?keyword=enhanced+due+diligence+report+sample
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/lowugimerija.pdf
    • https://cdn.shopify.com/s/files/1/0452/6155/3826/files/begum_hazrat_mahal_online_form_2019.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/blogs_descarga_de_libros.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/2639461585.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/tufesaza.pdf
    • https://cdn.shopify.com/s/files/1/0458/6428/8409/files/tutorial_autocad_architecture_2014.pdf
    • https://cdn.shopify.com/s/files/1/0437/6628/4439/files/fejid.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7394/files/total_conquest_mod_apk_offline_unlimited.pdf
    • https://cdn.shopify.com/s/files/1/0434/5836/3544/files/vadake.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/129567043.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/calendario_biodinamico_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/2135/1587/files/javowunonokulemelip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdf
    • https://cdn.shopify.com/s/files/1/0454/0334/0968/files/befunky_editor_pro_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7735/files/perspective_transformation_opencv_python.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_off000062be.bin
180151c65019e8d48f3587377d4eb407610226ae688531c08b8470f65162ae89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BE 5444 bytes
font_01_sfnt_off0000751a.bin
e863ab6dc3a628cc5314d024ca0f7c5faea2fe74ed4c160420b737b16a243d20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751A 10360 bytes

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