Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f8853a45e9c3893…

MALICIOUS

PDF

54.8 KB Created: 2020-08-05 06:56:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f1759d9dc9b298be57f24f88a50db05 SHA-1: c3a09036ad96002f766531f223489a00091774cf SHA-256: 4f8853a45e9c389366fb8388939d9c6f931b284ebffbb95001a29a204e769dcb
160 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body and heuristic firings indicate a lure for an advance-fee scam, likely attempting to trick the user into visiting the malicious URL. The primary malicious URL identified is https://ttraff.ru/pify?keyword=dashiell+hammett+maltese+falcon+pdf.

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.ru/pify?keyword=dashiell+hammett+maltese+falcon+pdf
    • http://files.zip-dang.com/uploads/1/3/1/3/131383664/gadizubobowow_kufusu.pdf
    • http://files.tinagutierrezartsphotography.com/uploads/1/3/0/7/130775383/remax-taxopugazaledu-fuluxibejurifuj-lavosiraleset.pdf
    • http://files.writespacejerusalem.com/uploads/1/3/1/3/131380005/setot_nejilanimugag_bazumudopibugor_soforimuvepazid.pdf
    • http://files.stevekimmusic.com/uploads/1/3/1/8/131872015/sivotezufusobijota.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/18392424418.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/56771139602.pdf
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/pedagemon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nowivozepax.pdf
    • https://cdn.shopify.com/s/files/1/0438/5928/0022/files/xaxizukixawikirikaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4496/9365/files/cambridge_igcse_computer_science_programming_book_for_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/kepokagefamuzafuwitib.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/fedupusiluxonorafanemi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/western_union_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0432/0267/4845/files/dukezugoneta.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/78182443511.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_off000097b3.bin
3b804d98040fe9b841fee70ca71f5d96fce45c527eb7bda6832e4c7d3dbaa46c
pdf-font-stream PDF embedded font (sfnt) at offset 0x97B3 5296 bytes
font_01_sfnt_off0000a99d.bin
0a0f2c333f710fef8b30d5f17e2ff828190285b9245e1f577b0036ecd9bb09a5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA99D 10700 bytes