Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1df54f753bd68ee…

MALICIOUS

PDF

91.1 KB Created: 2020-09-21 21:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8661b7e7a94bc4c7d80ab21eb899b2fd SHA-1: 57470698bdcb0c67cd082ae69ff5d84327764aa1 SHA-256: f1df54f753bd68eeac73b567d706d696272fdde7a34c2c01f098f6af7d7379e2
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, 'https://ttraff.me/wix?keyword=barclay+commentary+revelation', is identified as a malicious redirector. The presence of a large number of links, many pointing to Shopify domains, suggests an attempt to manipulate search engine results or distribute malicious content through a seemingly benign platform. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, further supporting its likely role as a lure rather than legitimate content.

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.me/wix?keyword=barclay+commentary+revelation
    • http://maxeka.bcartglass.com/uploads/1/3/0/9/130969690/9f757be8a8.pdf
    • http://magazo.jvcai.org/uploads/1/3/1/4/131438500/f948f638.pdf
    • http://files.ipathinc.org/uploads/1/3/2/8/132814958/5473946.pdf
    • http://files.barebearbutter.com/uploads/1/3/2/3/132302824/wakuja_xaxaziku_miwad.pdf
    • http://files.starwheelprinters.org/uploads/1/3/1/3/131379134/71d54f4b59f14a.pdf
    • https://cdn.shopify.com/s/files/1/0434/3880/1061/files/dynamite_crossword_answer.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/skf_saf_bearing_housing_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/808_bass_samples.pdf
    • https://cdn.shopify.com/s/files/1/0463/2707/0880/files/52351553121.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3814/files/tenok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59854739703.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/pulmonary_embolism_management_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0479/6222/6855/files/zubisix.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1591/files/71252492806.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_off00012bcc.bin
956715a5efcd3f43714c2ed20ab631a5a1959184d9853bcbce81224fe3e0a74c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BCC 4976 bytes
font_01_sfnt_off00013cb0.bin
17868c39985ce56f5f26c15af152dc79cccf0a7ddc5cba93e308a253eef76789		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CB0 10204 bytes

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