Malicious PDF — malware analysis report

Static analysis result for SHA-256 a633873314a7b428…

MALICIOUS

PDF

53.5 KB Created: 2020-09-01 00:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4faedadc2eb3d20bd62cd1656aa661de SHA-1: f9ec1bf4d62d6a08790610049d8fb56f26ec7b4a SHA-256: a633873314a7b428a5e3d32878d6ae12833491383daf246d46eed89f98a80b82
120 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, though heavily obfuscated, contains the malicious URL. This suggests a phishing or social engineering attack aiming to lure the user to a compromised site. The presence of numerous Shopify links, while mostly benign, is characteristic of SEO spam campaigns often used to host malicious content.

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.ru/wix?keyword=java+1.+6+0+21
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/dotokasajukamudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8424/files/l_oreal_lumi_cushion_swatches.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/microsoft_access_programming.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/fall_out_boy_infinity_on_high_zip.pdf
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/rental_agreement_for_house_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8518/files/capites_da_areia.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/quilibre_de_hardy_weinberg.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/xigeruxinurofosaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/windows_7_ultimate_activation_toolkit_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ef624ea4c24ec9b07957656968102d.pdf
    • https://static.usrfiles.com/ugd/81d6a4_fb79cfe4650d4a8bb7849d288040e247.pdf
    • https://static.usrfiles.com/ugd/ab922d_5cb827a79cf84118a8068dd3920c2773.pdf
    • https://static.usrfiles.com/ugd/f103bb_129f0da24022435982258f22429e7303.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/georgia_corporate_nol_carryback_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/21160497083.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8353/0407/files/ford_f-_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/sataxobosewutobepoje.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_off00007978.bin
0740a3b92b41593600918218f031f36655552d7fb4996d9099fdc04351e6e326
pdf-font-stream PDF embedded font (sfnt) at offset 0x7978 5200 bytes
font_01_sfnt_off00008b84.bin
ec38cc03bf999b9a10fed1e4235b0665efdad8cc93f7b0f7513dcd937844a53d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B84 4932 bytes
font_02_sfnt_off00009c7a.bin
5282e17cb0afee06d229a055884be8756dff9211aecaa05e2d15d90eb8585353
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7A 14220 bytes