Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c998a22a829792…

MALICIOUS

PDF

44.4 KB Created: 2020-09-06 08:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15f74b4705cf8a047af0f387908d2453 SHA-1: 61e39aa99dc746b5baed7a111d32308eeb592186 SHA-256: d4c998a22a8297929c8d74d1687dbf428806531e8dfda3889cec3834e07ee991
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a link to a known malicious redirector, disguised as a 'maintenance template excel free'. This, combined with the 'SE_INVOICE_LURE' heuristic, indicates a phishing attempt to trick users into visiting a malicious site. The document body, though heavily obfuscated, contains the malicious URL and references to template files, reinforcing the lure.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=maintenance+template+excel+free
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/bajirao_mastani_songs._pk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8946/files/football_manager_2015_download_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/0345/9230/files/56640024145.pdf
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/lunugawejidolakadawurilog.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/45982477617.pdf
    • https://static.usrfiles.com/ugd/33c377_118ae96b5b574ce4b3e10a9edabe1901.pdf
    • https://static.usrfiles.com/ugd/516793_416dc60ccbc54919b788bf80b46e6019.pdf
    • https://static.usrfiles.com/ugd/b8c837_74d49489ccae40119cda99f384d04bb7.pdf
    • https://static.usrfiles.com/ugd/d55797_c1146b4898ba4729b6d8a698e5b56c76.pdf
    • https://static.usrfiles.com/ugd/1d64af_9a9a1d1e8b7b46abaadec71664190f2a.pdf
    • https://static.usrfiles.com/ugd/c1c462_f6cff5e99f7e471280b3a35e4a594d64.pdf
    • https://static.usrfiles.com/ugd/a44510_8b57f64c389047198838baf402be40e1.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_off00006f8e.bin
f163d9740720f543fb7c54d80ff49fc798b3376a70b746e8b574835b648ea5a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 5056 bytes
font_01_sfnt_off000080c1.bin
ec176ed9b1c06bd9c428fb13362f83d396499e113c10787084ccb40f6fc11c71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C1 10636 bytes

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