Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f2cdfef9a41a94…

MALICIOUS

PDF

38.0 KB Created: 2020-09-15 10:30:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00e9a0b00c0d5361e68ff06bad1f210d SHA-1: 1ac4998446f8c41461b25a4a9a0f34ed8c8f212f SHA-256: 57f2cdfef9a41a9471c707fbcc4bba919c2851f563bf79724e812267f6905c9e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links designed to appear as free PDF downloads, but which redirect to malicious infrastructure. The primary redirector URL is https://ttraff.com/wb?keyword=jesus%20te%20llama%20pdf%20gratis. This technique is commonly used for SEO poisoning and phishing campaigns to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=jesus%20te%20llama%20pdf%20gratis
    • http://files.jacquevilmainmusic.com/uploads/1/3/1/3/131379382/3593021.pdf
    • http://files.rosewriting.com/uploads/1/3/1/4/131406558/1892392.pdf
    • http://files.showmyboutique.com/uploads/1/3/0/9/130968996/gevolurajozo-pudikegigugi-mofabes-mubexoj.pdf
    • http://files.skylinescotties.com/uploads/1/3/0/7/130775806/milirofesidowij.pdf
    • http://kirar.himoart.com/uploads/1/3/0/7/130740178/e1e52.pdf
    • http://files.alvinmark.com/uploads/1/3/0/7/130775520/8148803.pdf
    • http://famir.siamdayspa.com/uploads/1/3/1/0/131070325/tibaxa.pdf
    • http://files.augustahomesnc.com/uploads/1/3/0/7/130775518/gukakuli.pdf
    • http://pasivagal.hail-vegan.com/uploads/1/3/0/9/130969114/0e58ab51.pdf
    • http://files.afrikattebengals.com/uploads/1/3/1/0/131070611/simemuxezitu.pdf
    • http://files.firespicesmokehouse.com/uploads/1/3/2/6/132695399/754460.pdf
    • http://files.uraide.nl/uploads/1/3/0/8/130874125/zetaluveke.pdf
    • https://cdn.shopify.com/s/files/1/0463/0321/5778/files/harris_middle_school_spruce_pine_nc_phone_number.pdf
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/hovercraft_project_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000490d.bin
25aa814e101647bc7228ee181071e8d940aeca7d223837c2b89c999f1960d597		 pdf-font-stream PDF embedded font (sfnt) at offset 0x490D 5016 bytes
font_01_sfnt_off00005a21.bin
f35cf2dee17fe4d5fa0e12ed4b672d022d942926084b805a57af9195fe7c7c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A21 10268 bytes
font_02_sfnt_off00007b8c.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 4324 bytes

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