Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6290ae81ccaa49…

MALICIOUS

PDF

53.0 KB Created: 2020-08-09 23:37:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 766269935e9f7415dbcb641788118cee SHA-1: c80497d59471e257e022971943ef7c8729438214 SHA-256: ea6290ae81ccaa495edf6dffcd52610b9ac02b3f9130889ef5ae5ece80d47371
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine results. One of these links, https://ttraff.com/pify?keyword=electrical+problems+and+solutions+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to electrical problems and solutions, likely serving as a lure to encourage clicks on the malicious link.

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=electrical+problems+and+solutions+pdf
    • http://files.newseasonwc.com/uploads/1/3/1/0/131071157/3821101.pdf
    • http://files.publishthevision.com/uploads/1/3/0/9/130969915/serilu.pdf
    • http://zaputax.northwaystudents.com/uploads/1/3/1/8/131871390/bufufofesera.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/mepavizirezup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0743/4142/files/pavepepoduwoneze.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/36175630788.pdf
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/78419467878.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/12435474818.pdf
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/cerebrovascular_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0438/9804/4568/files/zisemor.pdf
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/28768284041.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/the_rise_and_fall_of_adolf_hitler_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/3830/0568/files/fikimabotopovaruniroje.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/95349878590.pdf
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/baye_managerial_economics_and_business_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/articulo_de_opinion_caracteristicas_y_estructura.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_off00009016.bin
a56f2c4a3ebcf9966ec53a95194a8179715d1c7448af3e7cc7917a4e05c12b7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9016 5400 bytes
font_01_sfnt_off0000a251.bin
c956023b2543749d31e4d062e66d6da17fcfaf8ff3c76fe60e2fd11d9c3369de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA251 10616 bytes

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