Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b7ebb6ecfd65ad7…

MALICIOUS

PDF

41.6 KB Created: 2020-08-06 12:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dd177ccabb5ef704e44f0d27ba7cbef SHA-1: 206b8a7c957dc5e9a03bbb39d3de2107cd281c8f SHA-256: 7b7ebb6ecfd65ad7cc7d1f0b614b06e44c0fe9dda4e35153090d7e2d5125116a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or redirection strategy. The primary malicious link is likely intended to lead the user to a phishing site or a malware download.

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=supervised+autonomous+robotic+soft+tissue+surgery+pdf
    • http://files.theartofshade.de/uploads/1/3/1/8/131871816/poboxu_lifurono_bizuropizunojex.pdf
    • http://files.commitmentcounselling.com/uploads/1/3/0/8/130874160/13f0deaf9b2c.pdf
    • http://fatako.karenwilliamsjungianpsychology.com/uploads/1/3/2/6/132681579/fuwoxizarenof.pdf
    • http://files.franklinjgreene.com/uploads/1/3/0/9/130970009/wurenipezixemagagege.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/57995481602.pdf
    • https://cdn.shopify.com/s/files/1/0435/5457/0399/files/gejorazewilugazojirexedem.pdf
    • https://cdn.shopify.com/s/files/1/0439/1573/9304/files/spanish_grammar_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3658/files/bojonuzofubulejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/11423692156.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/arduino_tutorial_sinhala.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/nofug.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7350/files/65788266811.pdf
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/pasitanedoxijimowiwekax.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/51274582779.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/vukamejote.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/32763509847.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexikebesadunav.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_off000062b8.bin
0954e3d9df5215808e67f5ae2655f94245177485a1e4cf0f2f6d7c41b3c7ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 5848 bytes
font_01_sfnt_off00007695.bin
e44776cbb9f75b6e7393bfc2e00621b5325c67e0f9597adbcb0d917f1fa496cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7695 10240 bytes

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