Malicious PDF — malware analysis report

Static analysis result for SHA-256 dccd37af06f85a94…

MALICIOUS

PDF

46.1 KB Created: 2020-08-30 17:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eca3b82fd0dad92dba6335bfc377d23 SHA-1: e7b0f414b8975352796de22594d2c90fee2c6e00 SHA-256: dccd37af06f85a945282d58d59a598099a849dd28327609c0fd5530d9174062e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=arma+3+steam_api.+dll'. This URL is presented within the document body, suggesting a social engineering lure to download a file related to 'Arma 3'. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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=arma+3+steam_api.+dll
    • https://static.usrfiles.com/ugd/b8c837_57fa0adc9a13419599b5579cc36b10a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_af3fb698941c4120bcebc329ca68dcf0.pdf
    • https://static.usrfiles.com/ugd/6116da_8cb24ba67f8a41849af2e4c3639bd314.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6b7d4e6566648ff8d62b88f85dfd127.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/manuale_bticino_smarther_sx8000.pdf
    • https://cdn.shopify.com/s/files/1/0431/8845/3533/files/wudew.pdf
    • https://cdn.shopify.com/s/files/1/0437/8034/1917/files/physically_and_mentally_challenged.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdf
    • https://cdn.shopify.com/s/files/1/0434/0121/6163/files/best_powerpoint_template_lucu_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/jatitubobe.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e9be0217a2c438ca5ca0ecfe9722218.pdf
    • https://static.usrfiles.com/ugd/d5d855_1213716660134ae98818d880a53dc674.pdf
    • https://static.usrfiles.com/ugd/30e015_4254580b9b9b4ae4a1abc76756034a8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9aa06bbc0fc2415db93f5d392d6eafc3.pdf
    • https://static.usrfiles.com/ugd/7f46b5_9e3ea5e9262148f481dea97d2d9895a9.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_off00006a0e.bin
a9cf38ca9d5aebb118744a1425895dc6de80174b37e88c5c07b561114c9abb45
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0E 4892 bytes
font_01_sfnt_off00007aae.bin
84825eee1135f9b9e2d1453a25bc21d6b2eba065b2da3da9af4f028b4f7a7191
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 10156 bytes
font_02_sfnt_off00009d56.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D56 4324 bytes