Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47df93a13414a99…

MALICIOUS

PDF

47.3 KB Created: 2020-08-18 13:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d7518ab968c566c6f5f70fc3003ae2a SHA-1: aaf256228ca6f5cf37ea4fc81db7c18466ab26e1 SHA-256: b47df93a13414a99ea0370aca2cb12d8bb17d42ffeb11487682b547b69c5ff89
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they are owed money or will receive a parcel, a common social engineering tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=2000+basic+english+words+pdf, which is likely used to deliver a secondary payload or redirect to a phishing site.

Heuristics 4

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=2000+basic+english+words+pdf
    • http://files.constrology.com/uploads/1/3/0/7/130740538/49f1f81e2.pdf
    • https://cdn.shopify.com/s/files/1/0440/5441/3462/files/ajay_kumar_singh_english_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/xazovedokalekulojimut.pdf
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/89544461894.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/43179157028.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/83532621971.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/64419067414.pdf
    • https://cdn.shopify.com/s/files/1/0437/3702/2615/files/3728116623.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/tewolotoreposa.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/awards_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/favipawetedugage.pdf
    • https://cdn.shopify.com/s/files/1/0431/4621/5584/files/tulibomovabivowabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/fomigamuw.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_off00007ae2.bin
34443bca20cb7cb288cf36c2e22b73da052c9e555cfe8bfa2a4aae2beafc3ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE2 5828 bytes
font_01_sfnt_off00008ea5.bin
e2576820fbab227752424dd1333d93e7406f7f7d6590ed840672089a3b3a5c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA5 9980 bytes

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