Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9702372750f0b4…

MALICIOUS

PDF

36.3 KB Created: 2020-08-25 12:31:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 629837d32246145aab6a46c224e7b839 SHA-1: 20ab33f623770999e4ee4b99ef9803a15b11c3fc SHA-256: fa9702372750f0b495df99a1fc1471aefbc4b3ef5799e7e2561dfa72cb4d6cfb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=a+b+c+d+song++pagalworld.+com, is identified as a malicious redirector. The document body contains garbled text but includes the malicious URL and a benign-looking PDF URL, suggesting a lure to a malicious site disguised as a collection of documents.

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.ru/pify?keyword=a+b+c+d+song++pagalworld.+com
    • http://files.nowdrum.com/uploads/1/3/1/8/131856079/3822355.pdf
    • http://files.sailingwildhorses.com/uploads/1/3/1/3/131398598/lepogi-tebonajagabuvet-xatosevepidoji-kafadomonubu.pdf
    • http://dudunenur.finishingprintmatters.co.uk/uploads/1/3/1/3/131383790/7158206.pdf
    • http://files.occasionalannouncements.com/uploads/1/3/0/8/130874252/pujilesu-xikuwubibogubis-giwubakutize.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/total_body_works_5000.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/bjcp_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/9903/6579/files/akademia_pana_kleksa_tekst.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/algorithms_in_c_robert_sedgewick.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0904/files/zekubedopozavimeselozotej.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/70531309805.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7966/files/85198479440.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/rewavixobobogijofo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9776/7592/files/aptitude_test_sample_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/13827965563.pdf
    • https://cdn.shopify.com/s/files/1/0449/7299/8815/files/machine_learning_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/bus_admittance_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0464/6630/2110/files/epigenetics_review.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_off00004f8d.bin
344960fc8e9bf0618b2e124f19af72a6bbda5ef15f6dca265e6a396f621ff2e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8D 5648 bytes
font_01_sfnt_off000062aa.bin
d11123cf2b04b3ce27fbcad3b4cbd65064212ada16da7edf22e86f65a8802020
pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 9756 bytes