Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5a58ff1cb84288…

MALICIOUS

PDF

41.7 KB Created: 2020-08-16 00:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7130564e19a11c5c51872f31cd9cb352 SHA-1: b9bd46dd054eade0b1c7f303e2dc13112bfa95af SHA-256: ae5a58ff1cb84288ba4aa91e8a4fc9be3da224579a4a11b63101304e30c516aa
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=coloring+house+worksheets`. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a large number of external PDF links were found, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the same redirector URL and several benign-looking PDF links hosted on Shopify, likely used to lend legitimacy.

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/pify?keyword=coloring+house+worksheets
    • http://mevawowij.thefoxsfiberden.com/uploads/1/3/1/1/131164250/adb2c74.pdf
    • http://files.sags.org.uk/uploads/1/3/1/8/131857419/435830.pdf
    • http://files.eksaathcampaign.net/uploads/1/3/2/3/132302978/3201563.pdf
    • http://files.innerinfinityhealing.com/uploads/1/3/1/3/131380094/649d76c8a5.pdf
    • http://nuxokobum.6thwilson.com/uploads/1/3/1/3/131381204/1814370.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/79007073490.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/zidukudadefazuvuxetanuzaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/canon_lide_210_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/mofiranofupofulef.pdf
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/39062990941.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/77353441854.pdf
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/free_vehicle_maintenance_checklist_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/2525/0974/files/89621967749.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/xedagome.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/medicinal_plants_in_tamilnadu.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_off00006722.bin
718390e01c559b386f7fb11f90dc53d536ace30efd7282fefd51679b15e7266e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6722 4800 bytes
font_01_sfnt_off0000777b.bin
74952feeb128b54f244497ea6c7b21cd8163176f1177f5a2e4c9e6e82350844d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777B 9964 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.