Malicious PDF — malware analysis report

Static analysis result for SHA-256 8efbc597723a89b9…

MALICIOUS

PDF

53.8 KB Created: 2020-08-06 21:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6470fe93f7e425d0243212b6162839cb SHA-1: 20d19138ad04b2e5364adecf9b2117cc9743823d SHA-256: 8efbc597723a89b92352af3b0eadc331f5133936c0904b6db2c3344461d76acd
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, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to create a link farm or distribute malicious content through numerous seemingly benign URLs. The primary malicious URL identified is https://ttraff.cc/pify?keyword=blue+bead+story+pdf, which likely serves as a gateway to further malicious sites.

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.cc/pify?keyword=blue+bead+story+pdf
    • http://vavoto.portfolio-people.com/uploads/1/3/0/8/130873951/sozapativaxebo.pdf
    • http://files.magnoliatexasoutdoorliving.com/uploads/1/3/1/1/131164324/4097551.pdf
    • http://files.fromsandy.com/uploads/1/3/1/4/131484133/xajukagaw-dofixunevuvemab.pdf
    • http://gukax.meditationwithmish.com/uploads/1/3/1/3/131398560/kebobutepiwikiwup.pdf
    • http://files.luxeinteriorsla.com/uploads/1/3/1/8/131871569/wedokotare.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/17864625025.pdf
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/15257794635.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/86436312576.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/printable_ged_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujaxitedidubabupopivup.pdf
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/jupusijedutojig.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/rupivivumezuno.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/radidedapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0168/3873/files/ged_study_guide_2015.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1125/files/cents_to_dollars_converter.pdf
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/sitokedujoxaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4600/files/duwaxigenegipurozonamelo.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_off000095d2.bin
685d3cb7e0b3bfda494e521cc8a3eeb90ad40d6c618a6e2ac0b841d79d8e134b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95D2 5324 bytes
font_01_sfnt_off0000a7fe.bin
aafe2a1c6e9575305d0489cbc0f5102faddd95ab6312b1de1119eb81db3c558e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7FE 10120 bytes

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