Malicious PDF — malware analysis report

Static analysis result for SHA-256 afab39adbc274f95…

MALICIOUS

PDF

35.9 KB Created: 2020-08-12 03:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f88eb909b746363decb3fef61a9a266 SHA-1: 41ebcffde768bffa887e980a50fc2f42d26d1e6a SHA-256: afab39adbc274f955877c4b6398e06f7fb03ceaa1c15a38707c94172594bc78e
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body includes a call-to-action phrase, suggesting a lure to click the malicious link. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cambiar+pdf+a+word+descargar
    • http://files.schombergcommunityfarm.ca/uploads/1/3/1/3/131380868/c3c31a37f78ec7.pdf
    • http://files.taverhamdaycentre.org.uk/uploads/1/3/0/8/130813906/7266292.pdf
    • http://files.styldhairsalon.com/uploads/1/3/1/3/131380052/xesex_faxewonubed.pdf
    • http://dulagebol.bellabloodlust.com/uploads/1/3/1/3/131383791/1392458.pdf
    • http://files.tidingsfromtodd.com/uploads/1/3/1/8/131856326/fabuge_nipowo_rapiwa_mutever.pdf
    • https://cdn.shopify.com/s/files/1/0436/8872/2597/files/zaxotu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1637/8773/files/stages_of_meiosis_1_and_2.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/bioethics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/lejojajulis.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/planos_arquitectonicos_de_departamentos.pdf
    • https://cdn.shopify.com/s/files/1/0431/9176/3105/files/99896054511.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
    • https://cdn.shopify.com/s/files/1/0437/1405/2247/files/select_random_charachters_from_latin_in_nodejs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/56474286275.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/gozade.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_off00004f16.bin
4e87131b352721075e151a0f65f70f5afa968e0c0f4be64a616777df678dba63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F16 5580 bytes
font_01_sfnt_off0000620d.bin
9c197be7009844eeed6d520161d73884232540591212a618818b6a56c518ec2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 9636 bytes

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