Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf4f79bad4bf361…

MALICIOUS

PDF

52.4 KB Created: 2020-08-10 04:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48ec4b6068b34046688bcf8a4706b487 SHA-1: 580c6ac4a1cdb884eb46488bfe7b3e231aa67806 SHA-256: baf4f79bad4bf361875809549b648e65c21ce84c592ccbe3cf01c8d903d87601
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. This is indicative of an SEO link farm, a technique used to manipulate search engine rankings. One of the embedded links, https://ttraff.com/pify?keyword=albert+schweitzer+bach+el+musico+poeta+pdf, is identified as a malicious redirector. No scripts were extracted from this sample.

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=albert+schweitzer+bach+el+musico+poeta+pdf
    • http://files.landwaterscience.com/uploads/1/3/2/6/132695575/vuwonesojile.pdf
    • http://gilofame.ngravinggifts.shop/uploads/1/3/0/8/130874038/7888284.pdf
    • http://files.buildingourtomorrow.org/uploads/1/3/1/0/131070137/nifesitukoxekezogev.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/fepojepajesotil.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/pasar_de_a_word_gratis_y_rapido.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/dujataf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/only_the_strong_film.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/vugaguvogulapezero.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/tigajenujabukabadow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/86716410003.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/tevarebu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/how_to_delete_rows_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/bootstrap_autocomplete_dropdown.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/biblia_de_estudio_palabra_clave_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/aha_bls_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/99196272988.pdf
    • https://cdn.shopify.com/s/files/1/0435/4686/9915/files/tozut.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_off00007ceb.bin
19bfdd68db40970fbaee627d7546cdbb798c5e5e360fddf6faa5b5bca87c6afa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEB 5664 bytes
font_01_sfnt_off0000901d.bin
b07148e6f0890e477b8fe235aad2784bdd57c017c314d47dd067b2033712de46
pdf-font-stream PDF embedded font (sfnt) at offset 0x901D 16644 bytes