Malicious PDF — malware analysis report

Static analysis result for SHA-256 afce3a46d37fe94e…

MALICIOUS

PDF

53.9 KB Created: 2020-08-27 13:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae25c8aa883282adebc297ca0b460434 SHA-1: 90ca6b955d6e1ac62f030506261bcaae87c7e85c SHA-256: afce3a46d37fe94e7cbae64e57475cfd13f0fa610dba9527550abe3573583844
150 Risk Score

Malware Insights

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

This PDF document contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking URL hosted on Shopify, suggesting a lure to a malicious site. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting a malicious intent to drive traffic to potentially harmful destinations. The ML_NYX_PDF_MALICIOUS classifier strongly indicates maliciousness.

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.cc/pify?keyword=best+sniper+build+fallout+4
    • http://files.hhscounseling.org/uploads/1/3/2/7/132740682/2114108.pdf
    • http://files.periodpalsproject.com/uploads/1/3/0/7/130776655/bilejivom_jemoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/7119/9642/files/fuse_odg_azonto_mp4_audio.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0050/files/tedoliwafetimeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/tebixexewunuvulowox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/interpreting_graphs_worksheet_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/medical_terminology_prefixes_and_suffixes.pdf
    • https://cdn.shopify.com/s/files/1/0433/8040/8474/files/84537577804.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/99012541666.pdf
    • https://cdn.shopify.com/s/files/1/0435/6289/3471/files/dinotebojew.pdf
    • https://cdn.shopify.com/s/files/1/0437/4586/9985/files/kupenijenaxopu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/rozitani.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/waxowakikog.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5880/files/24811013144.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_off00009543.bin
e2a7bef3ad5e4c779f5662d4bceccb068d584240e6fa99ee8998c068d69e303e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9543 5312 bytes
font_01_sfnt_off0000a754.bin
3a0e1b7ee4d2ce92607b714290223733550f2e4dc3ff325a451877b446ee67c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA754 10420 bytes

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