Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5b3f8836aed098…

MALICIOUS

PDF

113.3 KB Created: 2020-08-12 23:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d212d4ac77b4fd5a19dea04215de404 SHA-1: c9bd687e828abecdf0b28ef581f945f701a0caff SHA-256: ad5b3f8836aed0986a88cc8b5022052a52876f2693c2ca3a5a46cd5d930dfef9
160 Risk Score

Malware Insights

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

The PDF contains a lure for an advance-fee scam, referencing a lottery or prize and requiring courier delivery. It also embeds a link to a known malicious redirector, https://ttraff.cc/pify?keyword=blast+furnace+slag+concrete+pdf, which likely leads to further malicious content. The document body, though heavily obfuscated, contains the same redirector URL.

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.cc/pify?keyword=blast+furnace+slag+concrete+pdf
    • http://files.boardgameseverybodyshould.com/uploads/1/3/1/4/131437657/2190098.pdf
    • http://files.angelagoodetaylor.com/uploads/1/3/1/4/131407194/degulupupamage-pomevobonadobeg-betulas-zeruxif.pdf
    • http://temuz.nyacrossphotography.net/uploads/1/3/2/7/132712615/xafidis.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/88459883083.pdf
    • https://cdn.shopify.com/s/files/1/0432/1565/0980/files/sugobotanenikeresetefani.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/18296727382.pdf
    • https://cdn.shopify.com/s/files/1/0438/0616/3104/files/tigenuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/58391112398.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/cell_tissue_culture.pdf
    • https://cdn.shopify.com/s/files/1/0430/8369/4247/files/copy_and_paste_sparkles.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/types_of_blood_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/44581815359.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/67780876970.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/55087510495.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/fundamentals_of_electrical_engineering_bobrow.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_off000180ea.bin
2e1d782885e99b8aaa81fc8dab1dfe4f5c72a09b71ce36a77d78f2f18ca6e19e
pdf-font-stream PDF embedded font (sfnt) at offset 0x180EA 5372 bytes
font_01_sfnt_off00019333.bin
fef6d15a75818c5d7cc94d252aabee52b4ad3097c87a0f97a0b72db02b390500
pdf-font-stream PDF embedded font (sfnt) at offset 0x19333 10652 bytes