Malicious PDF — malware analysis report

Static analysis result for SHA-256 543de2e7b51c100d…

MALICIOUS

PDF

39.3 KB Created: 2020-09-11 02:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58eb066df733ef487b1ee6b4bf6295e2 SHA-1: 8032f984fa96971dd1078133f07e5f2672c4d7cb SHA-256: 543de2e7b51c100d8f1f785f451328555feae8cc62a21bdbe70037eb6c85a20c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with several identified as malicious redirectors or part of a link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate malicious intent. The document body, though heavily obfuscated, contains a URL that matches one of the identified malicious links, suggesting a lure to external malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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.link/pify?keyword=hwy+40+traffic+report
    • http://vuvur.missingpersonsrv.com/uploads/1/3/2/3/132303354/598715.pdf
    • http://files.armwrestlingarchives.com/uploads/1/3/1/3/131380934/5d6331b1284650.pdf
    • http://lirisosa.athomehvac.net/uploads/1/3/2/6/132680874/9236808.pdf
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/d_d_3._5_complete_arcane.pdf
    • https://cdn.shopify.com/s/files/1/0433/4397/0463/files/carbon_copy_forms_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/tajevokovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/jijaropax.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/jivibusimobadetexevokujo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3401/6924/files/jadisixoseleninogedamop.pdf
    • https://cdn.shopify.com/s/files/1/0464/7626/3574/files/27608617271.pdf
    • https://cdn.shopify.com/s/files/1/0431/1639/6695/files/73907581300.pdf
    • https://cdn.shopify.com/s/files/1/0464/9805/4312/files/10669204189.pdf
    • https://cdn.shopify.com/s/files/1/0429/4672/3996/files/dutajovuzojuvifiketamozo.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_off0000594b.bin
c15dda9300219153f73df0166554f926d945376dfc0027ee0776a483df3dfbe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x594B 5184 bytes
font_01_sfnt_off00006b1f.bin
a98d4e0c871949763c5897cda55eebd478ae575b51d1ba55e742af224764474b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1F 10980 bytes

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