Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d732261f0e3fd6…

MALICIOUS

PDF

38.7 KB Created: 2020-08-21 21:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 600fd043b55e2f308f486cbd4fd58bcf SHA-1: 7833a5c9439153bc3588987bb5242106bcf256d9 SHA-256: d5d732261f0e3fd63356f089216fd00d826b4706b4618325698d606d75280e44
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=commonlit+answers+i+have+a+dream'. This heuristic, combined with the presence of a PDF link farm, strongly suggests a phishing or scam campaign. The document body, though heavily obfuscated, contains references to the malicious URL and other Shopify-hosted PDFs, likely intended to appear legitimate. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/pify?keyword=commonlit+answers+i+have+a+dream
    • http://files.periodpalsproject.com/uploads/1/3/1/4/131408581/6874130.pdf
    • http://files.easylube.ca/uploads/1/3/0/7/130775334/jisafovazozuvuzunab.pdf
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/lowoledokiza.pdf
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/kororuzag.pdf
    • https://cdn.shopify.com/s/files/1/0433/5606/1850/files/87936917590.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1796/8536/files/network_topology_advantages_and_disadvantages.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/hindu_baby_boy_names_2020.pdf
    • https://cdn.shopify.com/s/files/1/0445/7139/4207/files/28_creencias_delos_adventistas_libro.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/89568400338.pdf
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/16599401929.pdf
    • https://cdn.shopify.com/s/files/1/0439/9549/6606/files/pebanul.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/4890787910.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_off00005a9c.bin
61813fb93785a4a10422120f8c4f279d1765f71020212a031604df4c330431e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9C 5124 bytes
font_01_sfnt_off00006be1.bin
230ade6d718b3a005e064f392983a144eb44a2010120e51af842e571ae582b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE1 10140 bytes

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