Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f6398a99e2bd25…

MALICIOUS

PDF

59.4 KB Created: 2020-08-14 23:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57f20f2b2fd2b53840b8024bdf255faf SHA-1: d9f1dd119782896cbdb1a199b507774d532a44c6 SHA-256: 44f6398a99e2bd2598dd64d08c098cb7d8a876b2152d573f81a1db6045a2d603
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, indicating a phishing or redirection attempt. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'bassoon concerto'. The presence of multiple links to external PDFs, many hosted on cdn.shopify.com, suggests a link farm used for SEO poisoning or distributing malicious content. The primary malicious URL is ttraff.com, which is flagged as a redirector.

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=bassoon+concerto+mozart+pdf
    • http://zofuwibip.dalemyersantiques.com/uploads/1/3/1/3/131381428/fopikumunonapeve.pdf
    • http://wasekisu.stfrumentius.org/uploads/1/3/0/7/130776485/7816500.pdf
    • http://waxojakir.rumble-records.com/uploads/1/3/1/4/131453598/9f56c78.pdf
    • https://cdn.shopify.com/s/files/1/0438/0291/9074/files/lopibumopa.pdf
    • https://cdn.shopify.com/s/files/1/0436/3082/1529/files/75266393740.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/32409285268.pdf
    • https://cdn.shopify.com/s/files/1/0428/5336/7975/files/18471450848.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/active_passive_voice_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/xafedofabojulusekozaba.pdf
    • https://cdn.shopify.com/s/files/1/0435/7344/4767/files/84315926692.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/lafuruza.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/59777431419.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/43237467806.pdf
    • https://cdn.shopify.com/s/files/1/0432/0890/0772/files/wigasopuvumimomope.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/best_reader_app_for_java.pdf
    • https://cdn.shopify.com/s/files/1/0428/8849/5270/files/88160244001.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_off0000aba6.bin
eeeb15c1589146221c5322bfdf0e49b879718c9aaabf15fa933f0da3bf642cf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA6 5368 bytes
font_01_sfnt_off0000bdd2.bin
a096c1339211ed174f73c7cae1983650ab2152627e76272db5a95ac6aa229908		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD2 10228 bytes

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