Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6adeb99931f84f…

MALICIOUS

PDF

42.5 KB Created: 2020-09-09 15:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0016510ec98b2971d94dc58289a15ff5 SHA-1: 5b085d889de5503d25e7abec3ab7ee5ccc3ad494 SHA-256: 9e6adeb99931f84fd16fbc8fe211ced98dc077d3fcd22113d216d3a5c06f8922
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with a critical heuristic firing indicating a malicious redirector link. The document body, though partially corrupted, contains text related to tax forms and includes the malicious URL, suggesting a phishing lure. The presence of numerous SEO-optimized PDF links further indicates a campaign to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wix?keyword=belastingdienst+formulier+aangifte+erfbelasting
    • http://zireliwi.emperialeducation.com/uploads/1/3/1/1/131164538/togejazaperixixug.pdf
    • http://tazugebi.higherheightsyouth.org/uploads/1/3/0/7/130739695/947862.pdf
    • http://files.bretfortonladieshockey.com/uploads/1/3/1/4/131453348/jalokinazad.pdf
    • http://files.menshairreplacementnc.com/uploads/1/3/1/6/131606257/a673c8ca6b58c70.pdf
    • https://static.usrfiles.com/ugd/d775a9_fcd5c73beceb48e799b8e9a4a4e543c8.pdf
    • https://static.usrfiles.com/ugd/9f2514_f3b2f9311b4d411cbec98142ca3aee0d.pdf
    • https://static.usrfiles.com/ugd/c618e9_a5fb5086a6444564b03d1449231e5ec3.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/nekibawutifovadigetada.pdf
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/manowar_die_for_metal.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/rodexokobada.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/arjun_kanungo_fursat_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3866/files/arithmetic_math_formula_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/0001/0664/files/risk_assessment_template_excel_2016.pdf
    • https://cdn.shopify.com/s/files/1/0446/2074/2819/files/42869787540.pdf
    • https://cdn.shopify.com/s/files/1/0464/0912/1960/files/86478391661.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/20838575974.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_off00006780.bin
71021e577c6601979b2938ca7b5e47cb3db5dd7ceb144c6cad230e324b5983f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6780 5416 bytes
font_01_sfnt_off000079da.bin
fd52bebf535d682c49bba3dcbf1bb8033975a2d3e924a09b4b83ea12e09c18a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79DA 10244 bytes

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