Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d25a5eb08172b…

MALICIOUS

PDF

46.4 KB Created: 2020-08-01 13:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 506696cc5dba3094a51590afb223557c SHA-1: e4f9fd0f07a70db40d82f91ab91abe8c58a464d7 SHA-256: 4f7d25a5eb08172b46125dd5827ce329943e9d40c9807f5ca447379bce0457af
120 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though corrupted, contains text suggesting it is a 'Traxxas slash 2wd parts diagram pdf', likely a lure to encourage clicks on the embedded 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.ru/pify?keyword=traxxas+slash+2wd+parts+diagram+pdf
    • http://files.kelseyeliason.com/uploads/1/3/0/7/130740477/vuditusu_wovorisowul.pdf
    • http://files.brewcha.info/uploads/1/3/1/8/131856108/gerifuwexeteza.pdf
    • http://files.beinsynch.com/uploads/1/3/0/7/130775583/vikizesopadolimujad.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/fefigubugovejupitopolutal.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/31931118525.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/nedutok.pdf
    • https://cdn.shopify.com/s/files/1/0438/9430/9019/files/70211284292.pdf
    • https://cdn.shopify.com/s/files/1/0435/0027/3830/files/pupedemuwavevigemuwus.pdf
    • https://cdn.shopify.com/s/files/1/0428/1955/1388/files/piduviki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdf
    • https://cdn.shopify.com/s/files/1/0437/3449/9493/files/ramidusotuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/39695884806.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/gikewubuser.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/zobibe.pdf
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/71982693992.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/madotozuli.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_off00007598.bin
9a121af0b500ee2e1f74d91a08d7eb1f7ff04a6d4071c91b9c3580574397046b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7598 5696 bytes
font_01_sfnt_off000088e6.bin
fbc3fd9328075f8d914e678d698709c93907d74ded108955535efc634496adc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E6 10412 bytes

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