Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae89346b5c25a22…

MALICIOUS

PDF

50.7 KB Created: 2020-07-28 04:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cfd9db63d1cc6267b2212ea26655c6b SHA-1: 09c3c96aeb96e944dc0d742de51b2025068196a0 SHA-256: 4ae89346b5c25a222d9e353b5f34ca26c0bb2806e4e821c227a5a93e931d0eac
120 Risk Score

Malware Insights

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

The PDF file contains a link farm of 16 external PDF documents, with the primary redirector URL pointing to a known malicious domain. The document body, though heavily obfuscated, suggests a lure related to a 'Beyond compare software user guide'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt.

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=beyond+compare+software+user+guide
    • http://files.obedcofcc.com/uploads/1/3/1/3/131381991/gokugudu_talizuwa_kekugifemibi_rekasex.pdf
    • http://files.abigailscreendesign.com/uploads/1/3/0/7/130739684/weluzufodajer-maboros-gunibe.pdf
    • http://files.andresmarinmusic.com/uploads/1/3/2/7/132740987/8fc1b744.pdf
    • http://files.janmartens.com/uploads/1/3/0/7/130738956/ce140baa2bf43.pdf
    • http://files.laserquestbournemouth.co.uk/uploads/1/3/1/8/131857334/lifopurub_latatowisasujat_jobazepipaka.pdf
    • http://files.andresmarinmusi
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/51463570910.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/xasag.pdf
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/gonoxuzomidajetasekid.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/84843275490.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/vekixinilab.pdf
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/suvazoginebabalo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/81249122353.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/likixetok.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/42600356146.pdf
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/478582466.pdf
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/wigof.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_off00007e28.bin
511c3e5263bc9ac26346403af326193f5fcea6dd29e7ba09a857d7f01e721cf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 5568 bytes
font_01_sfnt_off0000910f.bin
23ee67193c189304a0bad3261711721f5add5cca1cae07d6c23a0d1beb403a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 14196 bytes

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