Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac6a085bbb34b3e…

MALICIOUS

PDF

52.2 KB Created: 2020-09-16 15:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ef0b1920d84e8354b023f68d6aa2052 SHA-1: 103861d1bc43da7401cd4ddbffd4ccb96f943127 SHA-256: bac6a085bbb34b3e0d3cf4e809d21864ad9499a808d5eb3dbdb7aacff6252e73
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.club/wix?keyword=lola+and+the+boy+next+door+book+pdf, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains this URL, suggesting a lure to download further content or redirect to a phishing page.

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.club/wix?keyword=lola+and+the+boy+next+door+book+pdf
    • http://files.huntingtonschoolpto.org/uploads/1/3/1/0/131070872/bimemetewol.pdf
    • http://litim.kevinconlonart.com/uploads/1/3/0/7/130739564/44591.pdf
    • http://files.hippiefest.org/uploads/1/3/2/8/132814146/4704575.pdf
    • http://datuvoxi.morethananight.com/uploads/1/3/2/6/132681393/3108556.pdf
    • http://nivonike.juliekocherzinkus.com/uploads/1/3/1/6/131637131/babubo.pdf
    • http://files.gaie.org/uploads/1/3/0/8/130874254/a126f.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/kwal_paint_colors_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/76875119679.pdf
    • https://cdn.shopify.com/s/files/1/0482/6739/5234/files/tufep.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/baasha_full_movie_tamil_hd.pdf
    • https://cdn.shopify.com/s/files/1/0432/5235/1144/files/50494747654.pdf
    • https://cdn.shopify.com/s/files/1/0469/3298/3963/files/rorupegajaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/barbing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/gotopugigisuxivemuna.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_off00008aaf.bin
2462c3fb52d5a8b094f43c4023825c145400d8ff40731cd075ddc16589aa0036		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 5264 bytes
font_01_sfnt_off00009c99.bin
24054f2ee4cbc0592d420566d9e859d5812d3189d928b54b2681c1c2ec13b0eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C99 13436 bytes

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