Malicious PDF — malware analysis report

Static analysis result for SHA-256 7995886b9851c4c8…

MALICIOUS

PDF

34.7 KB Created: 2020-09-18 20:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d909d7b6bba8ec9fb0c9ef02adf65cb SHA-1: 9e37235d0d47d212f3793b3938712f77d128149f SHA-256: 7995886b9851c4c8b9dfd4b23d096dc4a71700d82fc6d05646d571e90be3ca0b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to suspicious domains and are flagged as malicious redirectors or part of a link farm. The document body, though heavily obfuscated, contains references to the malicious URL and other suspicious domains, suggesting an attempt to drive traffic to these sites. The presence of numerous links, including a critical heuristic firing for PDF_SEO_LINK_FARM, indicates a likely SEO poisoning or phishing campaign.

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.me/wix?keyword=skyline+ranches+amarillo
    • http://files.mcnshipwrights.com/uploads/1/3/0/7/130739182/4553314.pdf
    • http://files.propellertherapy.com/uploads/1/3/0/8/130814466/4855845.pdf
    • http://wufal.playyouth.org/uploads/1/3/1/3/131381352/1058218.pdf
    • http://zited.blinkgatproducts.com/uploads/1/3/1/3/131383621/vuperipamal.pdf
    • http://files.dynamicpolicetraining.com/uploads/1/3/1/0/131071067/49570.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4715/files/50825327542.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/44671561650.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8280/files/great_are_you_lord_chords_b.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/toxic_extract_graveyard_keeper.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/84888285174.pdf
    • https://cdn.shopify.com/s/files/1/0483/1812/0100/files/24595726019.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/8005/files/90836029662.pdf
    • https://cdn.shopify.com/s/files/1/0467/7373/1481/files/hasi_female_mp3_song_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0461/4707/6259/files/aopc_search_warrant_forms.pdf
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/electrolux_washing_machine_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/nosaxisaxatafojimekujal.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_off00004bbd.bin
5aa07774561a8f8bdeab5f3e1bc005324b6a60373f32864e2c116a5a72d5f6b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBD 5308 bytes
font_01_sfnt_off00005da5.bin
b654a89080e5ba18292631ef44565a6f0fbc75628bfb482407f2afa2792a89c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA5 9480 bytes

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