Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef7880ed775d137e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-04 19:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a7f64246b13f47c85b3b4682ff03b68 SHA-1: 2ec9781bbba67b4accc5aaeab5911f96cab7bd27 SHA-256: ef7880ed775d137ed9c1ee7a48232523f9472e5a136fb54151b1f23454e5e262
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. The document body, though heavily corrupted, contains text related to 'soft gelatin capsules formulation pdf' and the URL itself, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. 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=soft+gelatin+capsules+formulation+pdf
    • http://files.giftsandgraphics.shop/uploads/1/3/0/7/130775866/9254721.pdf
    • http://files.jazziebella.com/uploads/1/3/2/6/132681482/gajatonumigop.pdf
    • http://files.jamiemaltus.studio/uploads/1/3/1/0/131069950/e999bd.pdf
    • http://files.thatwallpaperstore.com/uploads/1/3/0/7/130740391/88bf59cecbaad.pdf
    • https://cdn.shopify.com/s/files/1/0440/4504/1814/files/80904466904.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/xirezujejojupopabe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/a_travs_de_mi_ventana.pdf
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/zomutenexisapaxupunifemil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/22442901251.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/advantages_and_disadvantages_of_direct_tax.pdf
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/bakogugutiboxorifaku.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2056/files/94875314990.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/lesukokivinoxolar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.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_off00007cd7.bin
1efdaf495908d2256e1cf7b0e8a0e07caf17456d4a364063339d361d9421c170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD7 5580 bytes
font_01_sfnt_off00008fc0.bin
99a63c62a3fe6517a759b7e1c6576f4edf79c5d49198033c3436d1a3b9724c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC0 11112 bytes

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