Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b1a8b7ab392a18…

MALICIOUS

PDF

36.6 KB Created: 2020-09-01 10:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f5f61ef708be24d4622af50979f35ea SHA-1: 09f4f420478c7de52355cef82f971fc713c3c55a SHA-256: b2b1a8b7ab392a18604a898d86f69a2c4479e8ea2a5ba77abb5cb1f3889d2504
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.cc/wix?keyword=fernandes+sustainer+101+manual'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first being 'https://cdn.shopify.com/s/files/1/0463/7078/3393/files/health_canada_adverse_drug_reaction_reporting.pdf'. The document body, though partially corrupted, contains text that appears to be a lure for a manual, likely intended to trick users into clicking the malicious link.

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/wix?keyword=fernandes+sustainer+101+manual
    • https://cdn.shopify.com/s/files/1/0463/7078/3393/files/health_canada_adverse_drug_reaction_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0434/7618/9346/files/98045787936.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1522/files/xafopi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/ravish_kumar_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lenibokufilitixesokan.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/50246043443.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/67620851931.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/89912555515.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/71044865555.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/90249124563.pdf
    • https://cdn.shopify.com/s/files/1/0436/2777/4115/files/42367525172.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_off0000521a.bin
f2f69015c700af6053fcd07583f8c13bbc218d5ad679100a69b742ff5f12318c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x521A 5120 bytes
font_01_sfnt_off0000636f.bin
c689d6f25a5a08f8cea89b2e2009e6df47a75762dfc294e10dd93b2427c1ca00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636F 10188 bytes

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