Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f36369e86854e5…

MALICIOUS

PDF

50.2 KB Created: 2020-08-11 21:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ad89fc45b855c99df9a35d0badf791 SHA-1: 2349ef9f73578035125164e1d174df08a5d81131 SHA-256: 49f36369e86854e595a9c5a91cb4144d84aaee2834964ba4df6ea15ba2e9d1dc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=arduino+uno+r3+pin+description+pdf, which is likely used to redirect users to malicious content. The document body, though heavily obfuscated, contains references to URLs and appears to be part of a link farm strategy, as indicated by the PDF_SEO_LINK_FARM heuristic.

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=arduino+uno+r3+pin+description+pdf
    • http://files.preservationdayton.com/uploads/1/3/0/8/130874526/a67c477d1.pdf
    • http://files.myhalloffame.net/uploads/1/3/0/7/130738720/gujoxaden_burosu_linuzawer.pdf
    • http://files.lynnespaintings.com/uploads/1/3/1/3/131383424/ee8396d36c8794b.pdf
    • http://saziw.alysonjill.com/uploads/1/3/1/4/131455158/wukunujofuwiguvejixu.pdf
    • http://files.drawingescapes.com/uploads/1/3/1/8/131858916/f424bb.pdf
    • https://cdn.shopify.com/s/files/1/0432/8446/3784/files/gebosipetonokex.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/razaxupo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1185/files/ambientico_una_ac_crs_ambientales.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/78695806102.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/xujifuxowarisixiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/zakedejulipajokopajuv.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/19322502833.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/opioid_risk_assessment_tool.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdf
    • https://cdn.shopify.com/s/files/1/0451/0511/9397/files/man_in_the_box_tab.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/kusofo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/joxes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/master_sanitary_fittings_catalogue.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_off000086fb.bin
1399b59445d2aa25feb3ebcf89f64f72246326edee818f315565f8c59806ec57
pdf-font-stream PDF embedded font (sfnt) at offset 0x86FB 5060 bytes
font_01_sfnt_off0000983e.bin
1df9a8ab4860e94d058fd2bc78f2bbf3ea174c7867673483efb016864dbd6a3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x983E 10360 bytes