Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07f00c624c4c93f…

MALICIOUS

PDF

46.1 KB Created: 2020-09-07 01:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a050c63abceda44f6985322ef9618647 SHA-1: e9477a0d990de9ab682206ad8616481d333a6941 SHA-256: d07f00c624c4c93f24ad9bfd04ef25ee07c53a6bd24248fee2412123d7f78497
150 Risk Score

Malware Insights

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

This PDF file contains a link farm and a malicious redirector, indicating an attempt to direct users to harmful content. The document body, though heavily obfuscated, contains text related to 'Brecks iris planting guide' and the malicious URL 'https://ttraff.club/wix?keyword=brecks+iris+planting+guide'. The presence of numerous Shopify links suggests an attempt to disguise the malicious intent within a large number of seemingly legitimate resources. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=brecks+iris+planting+guide
    • https://cdn.shopify.com/s/files/1/0461/1388/2275/files/xojonalokukibu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9675/1771/files/felupu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/jodatuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/7319427004.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/psychology_8th_edition_gleitman.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17227608912.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/rogepowuvosujojerusu.pdf
    • https://cdn.shopify.com/s/files/1/0461/1296/4772/files/97232635948.pdf
    • https://cdn.shopify.com/s/files/1/0446/3765/1107/files/jotiradigobajusopeg.pdf
    • https://cdn.shopify.com/s/files/1/0465/1941/9038/files/bosuzajup.pdf
    • https://cdn.shopify.com/s/files/1/0434/7412/4950/files/pizigulig.pdf
    • https://static.usrfiles.com/ugd/7f16bd_8a50d5e83b0b4c1fa80af7fc2234f7ae.pdf
    • https://static.usrfiles.com/ugd/ac8c68_20dffb7b96b54962b3b61ab3a5cc112a.pdf
    • https://static.usrfiles.com/ugd/e3834b_267790eb754d4aa6846dd7830302fa91.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_off0000762f.bin
81e9f2ce32098ac7bb64b454acb9c0c920c60681546c588e85ab25232972f7ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 5352 bytes
font_01_sfnt_off00008877.bin
0f649f1e26d47ee003f1c76e011c5f0c080f765c7cbccea05a2d137628b434c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8877 10352 bytes