Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a3ff67b02f0bc3…

MALICIOUS

PDF

41.6 KB Created: 2020-08-15 03:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42550f4a1d6e1b0e45b705f1e5abc502 SHA-1: 69f6ef9eb5499a0dae30fe3f71918e22f3eaddc7 SHA-256: 44a3ff67b02f0bc32869638d4214f1c75a71af7b72c8e162198bcf7f054a576a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a PDF link farm, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Powerpoint 2016 flowchart template'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/pify?keyword=powerpoint+2016+flowchart+template
    • http://vutijatu.farmboss-utv.com/uploads/1/3/1/6/131606027/2564968.pdf
    • http://files.creesbrothersfarm.com/uploads/1/3/1/0/131071252/4b5bf80c7.pdf
    • http://files.delreystudios.com/uploads/1/3/1/3/131383838/ruduma.pdf
    • http://gidak.theworshipcenterbuildingproject.com/uploads/1/3/1/4/131453247/pupijolaxuxepejug.pdf
    • http://xufamele.thefortcondominium.com/uploads/1/3/1/3/131380600/5e7dec7b3.pdf
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/70687893336.pdf
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/parts_and_functions_of_bacterial_cell.pdf
    • https://cdn.shopify.com/s/files/1/0439/4024/9755/files/mikukobuzuxitusuwom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5611/1520/files/design_themes_for_powerpoint_2007_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/taberolumutaboril.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/33854917394.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/brave_new_world_critical_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9605/files/vuneko.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5911/files/55483121404.pdf
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/materiales_dentales_trillas.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_off000064a8.bin
6a5e90d40a6f16137b9d3d4ba695408624aee08514bf84150638159f3662acf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 5648 bytes
font_01_sfnt_off000077c6.bin
51dc471c3a1f8e5eea55f71919b558a6cafff100e56d29228c65bce9b83bf7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C6 9948 bytes

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