Malicious PDF — malware analysis report

Static analysis result for SHA-256 df78026e1f2ebcad…

MALICIOUS

PDF

41.2 KB Created: 2020-09-01 03:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afbce035bb4dc94ddd8f6d9145c0bd38 SHA-1: bb617890040f481a9e53900e3117ce0fabcf2774 SHA-256: df78026e1f2ebcadaa7b88dac470d2e1975b1241b2c0ee8265aaa837d55c9d96
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also contains a large number of links to Shopify, indicating a link farm for SEO manipulation, likely to increase the visibility of the malicious redirector. No scripts were extracted, but the presence of a malicious redirector and the SEO link farm strongly suggest a phishing or scam attempt.

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.com/wix?keyword=weather+and+climate+quizlet+answers
    • https://cdn.shopify.com/s/files/1/0435/5742/1224/files/how_to_get_grass_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/gegidora.pdf
    • https://cdn.shopify.com/s/files/1/0436/6653/8649/files/malayalam_balarama_stories_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/7151/0430/files/bakigulixegax.pdf
    • https://cdn.shopify.com/s/files/1/0432/3078/9800/files/72691733681.pdf
    • https://cdn.shopify.com/s/files/1/0429/8378/4601/files/kakadanonoruzoleliziniv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/filubomolujesoro.pdf
    • https://cdn.shopify.com/s/files/1/0438/3172/2141/files/44419261615.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/kelujiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/mathematical_models_in_biology_leah_edelstein_keshet.pdf
    • https://cdn.shopify.com/s/files/1/0431/1721/5905/files/50135437268.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/nopimidafolela.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/garuwunopogaganegukexulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1469/files/68072080089.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/ms_sql_server_developer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3531/1775/files/20169616710.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_off000063ce.bin
0dc691c155a158aadc8f631b3284af0c23ea93403afa3eb3e0086ea8dccb947f
pdf-font-stream PDF embedded font (sfnt) at offset 0x63CE 5460 bytes
font_01_sfnt_off00007653.bin
3a90270839ccb971893ca9cd8cb1c842733207784fae986909373aa72cc52c1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7653 9716 bytes