Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee2750f5552cac0…

MALICIOUS

PDF

32.9 KB Created: 2020-08-23 20:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46c345a78b1dda8f200a7224f683b40b SHA-1: eedd336797c98f55e589f50fc9262f30217eaf5b SHA-256: 4ee2750f5552cac04fa3dd5fd88b86e2e1adf56084c0089fcffcbd83405f2efa
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one prominent link leading to a known malicious redirector. The document body text, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a social engineering attempt to trick the user into clicking the link. The PDF is likely part of a link farm designed to distribute malware or phishing content.

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.com/pify?keyword=porcupine+tree+lazarus+piano+sheet+music+free
    • http://files.europetothepeople.eu/uploads/1/3/0/9/130969990/2038000.pdf
    • http://fagusur.chicagodrip.com/uploads/1/3/1/4/131438008/d688d6.pdf
    • http://files.mediagearpro.com/uploads/1/3/1/3/131383207/dumixufijijeza.pdf
    • http://files.gbccollege.org/uploads/1/3/0/8/130873715/1244696.pdf
    • https://cdn.shopify.com/s/files/1/0432/9698/1147/files/pejuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
    • https://cdn.shopify.com/s/files/1/0440/9108/0869/files/tezirimusurumapo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0437/5560/2078/files/refiluwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/benzimidazoles_mecanismo_de_accion.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/zisinadekapikeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7751/files/pasar_de_a_word_gratis_en_linea.pdf
    • https://cdn.shopify.com/s/files/1/0439/0695/7467/files/71976032642.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/datawuwabemetixomizodim.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/97584240580.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_off00004401.bin
eae8f9eedbc4d388b4c0cc96223b77569c0081705e85afc4a0154da26a62a4dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4401 5308 bytes
font_01_sfnt_off000055e5.bin
45f47c7fa00f8eb1b1645356a8379e49970e3e12efd5afff16ab262c43d4166d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E5 9564 bytes

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