Malicious PDF — malware analysis report

Static analysis result for SHA-256 365f6f0fd329bce4…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 16:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ec0aa45ac6ebe182da8590beb7cde43 SHA-1: f192a515d2a579e938ff43bb3f14da0406ea98e4 SHA-256: 365f6f0fd329bce422f10dd4d37bf91a130cb38af3fc50e8a0087d2f6714b61f
128 Risk Score

Malware Insights

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

The PDF file contains numerous links to external resources, masquerading as a free watermark removal tool. One of these links, 'https://ttraff.cc/pify?keyword=remove+watermark+pdf+online+free', points to a known malicious redirector. The document body and heuristics indicate a lure to click on these links, likely leading to further malicious content or exploitation.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=remove+watermark+pdf+online+free
    • http://files.shispa-benefits.com/uploads/1/3/1/4/131437728/wubutivagomonamoga.pdf
    • http://ludejina.waternexusbelgium.org/uploads/1/3/1/8/131857419/dunemi.pdf
    • http://files.hhsalcorn.org/uploads/1/3/1/4/131437806/6003978.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/pugozadulute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12909571685.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/nusijakojodobuxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/wya_urban_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/ultimate_btools_mega.pdf
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/chiari_malformation_type_2_vs_type_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/63140586659.pdf
    • https://cdn.shopify.com/s/files/1/0433/6523/6901/files/vumexanobewetukorodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/antenna_and_wave_propagation_kraus.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/29147184203.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1029/files/lovefozineduxapawefe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/73305830591.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/fozeribotanabu.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_off0000650c.bin
d1a4c53bbb18f4a455031ae31ef6ec661c96eed950222d09e683a53d1f282413
pdf-font-stream PDF embedded font (sfnt) at offset 0x650C 5020 bytes
font_01_sfnt_off0000761b.bin
9bbb78d44d820edbd4f9d411e2bf27403261a4299ccd979e6b90576e093e3bb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x761B 10592 bytes
font_02_sfnt_off00009a57.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A57 4324 bytes