Malicious PDF — malware analysis report

Static analysis result for SHA-256 a974987f8e8404f2…

MALICIOUS

PDF

53.1 KB Created: 2020-08-08 21:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c48864b4924e1c44fa787456e0ae1a4 SHA-1: b9037236c46d463aa963a0b5aa821db795fb9502 SHA-256: a974987f8e8404f23fe101caa36229f7eea7fab49647f9a185140a206a0f9478
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the one identified by the heuristic. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or to download further malware. No scripts were extracted from this sample.

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=queen+s+gambit+exchange+variation+pdf
    • http://fovekari.woollens.ca/uploads/1/3/2/6/132683014/3423794.pdf
    • http://files.kristinemiles.com/uploads/1/3/1/6/131606291/lovunin_natusumozijedat.pdf
    • http://files.fhotosnearandfar.com/uploads/1/3/2/6/132682723/70e39a.pdf
    • http://files.momentum-lab.com/uploads/1/3/1/6/131636941/naxozabikofako.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/tofilupigirurikevizaxanim.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/87861157173.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/5425008899.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/38614647948.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/denabuxoru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/all_saints_tv_show.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/bijutixunadimiderolus.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/neonatal_jaundice_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/dimolujutisisejekifixi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2281/8200/files/senuxuzesaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/88334520268.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_off00008e4b.bin
2c72b633264c10f84d398d79dae2fbb92736647cd0e982636950266c252c8a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4B 5864 bytes
font_01_sfnt_off0000a21d.bin
3b421917d44e372b7aeb3832e42969eb4ffed88a466036e3a729d01c5ed9b90e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA21D 10888 bytes

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