Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a45ea277c58e54…

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 13:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3afdbdd66c7bc1b4f9ba07c00c4e3086 SHA-1: 5d989c8953be3396ea3c4a0e9c1ebe7d6e9651cc SHA-256: 44a45ea277c58e54959b05546ab198f15c60235f44b96b1d1c49385fb205745b
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as legitimate search results, with the primary link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This suggests the document's purpose is to redirect users to malicious content under the guise of providing a manual.

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=whirlpool+microwave+manual+wmh31017fs-+0
    • http://files.milanarielleproductions.com/uploads/1/3/2/8/132815206/285da76f391.pdf
    • http://vodofeja.visualbiochemistry.com/uploads/1/3/1/4/131407921/8436005.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13121593915.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/1812_overture_cannons.pdf
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/pipubuvawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/bescherelle_franais_conjugaison.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/duputirubukukedaba.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/pokerenopenuvel.pdf
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/camila_cabello_senorita_performance.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdf
    • https://cdn.shopify.com/s/files/1/0438/2192/4514/files/federal_trade_commission_credit_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0972/files/foxy_get_off.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/gajomer.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_off00004f6b.bin
8178d856a0e48a2469d2eb189203e0deeb3f6a5f70ab8b0a03c8aadab1d221dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6B 5892 bytes
font_01_sfnt_off0000637d.bin
2957a872461c0170085b0fb18e61aff51026ce39db8ed2493d8039fd007fd11b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 9980 bytes

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