Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe1a34fbf58b113…

MALICIOUS

PDF

58.3 KB Created: 2020-08-08 22:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d2476d5a2da7e29571f16ca9215973c SHA-1: a3ebc1095999428656bf24eed253799ccc811818 SHA-256: 3fe1a34fbf58b113309777e96f2dfaa43d3c242379a34eba363a4c28249160ae
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, pointing to `https://ttraff.com/pify?keyword=darcy+law+pdf`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which are hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. This suggests the document's purpose is to lure users to malicious infrastructure.

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=darcy+law+pdf
    • http://zoguteku.stellastonesandjewelry.com/uploads/1/3/1/6/131606490/78590.pdf
    • http://files.shutterlifeprojects.com/uploads/1/3/2/6/132695491/befamafujo.pdf
    • http://files.ndhsaa53206.org/uploads/1/3/1/8/131871864/4096932.pdf
    • http://files.mqpyouth.org/uploads/1/3/2/8/132816202/7781936.pdf
    • http://files.divotees.co.uk/uploads/1/3/0/7/130738894/ea05887c869bd.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/4288198049.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/zekekesipawadulokipuwiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/41375163078.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/mapa_de_angola_actualizada.pdf
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/24445226831.pdf
    • https://cdn.shopify.com/s/files/1/0429/3813/8783/files/aircraft_design_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2582/4929/files/mahindra_tractor_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/dewefe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/10762418826.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/18149724571.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1702/files/borojazegisawatizopez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000846c.bin
f9e03700f4d3898c5780ff1b94ae7a76c1bf391b6c6ebb7d55bfb7c4bd0c9e65
pdf-font-stream PDF embedded font (sfnt) at offset 0x846C 5164 bytes
font_01_sfnt_off00009630.bin
402b1b18ac906bb6726b120d7ff0256ea9d2616a2eb7ec62425d5b9c724ddd7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x9630 15328 bytes
font_02_sfnt_off0000c729.bin
df2c060281b2df21d20faaeb6d16842e3d517073a5a66e79a9a45d1870174b71
pdf-font-stream PDF embedded font (sfnt) at offset 0xC729 16108 bytes