Malicious PDF — malware analysis report

Static analysis result for SHA-256 da35968314cd8417…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 23:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 062b822ef25a22b19fa1748279563360 SHA-1: ca09f80ad73eb6dcc08adcce5d881c604c9cb222 SHA-256: da35968314cd84172da32aa6dc85752d045b6da5196efe20d60731b742baa129
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains references to the book 'Au bonheur des dames' and includes the primary malicious URL. The presence of numerous embedded links, including one pointing to a known malicious redirector, strongly suggests a phishing or malware distribution attempt.

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.ru/pify?keyword=au+bonheur+des+dames+chapitre+1+pdf
    • http://jajozi.frpstudio52.org/uploads/1/3/2/6/132696323/323053.pdf
    • http://files.bluestarjumpers.com/uploads/1/3/1/4/131411474/8c98fa610f407.pdf
    • http://files.creatingthespaces.ca/uploads/1/3/1/3/131380495/fifujutaxuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/13776580791.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5556/files/31962674138.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/12965342809.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/89086512266.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/rememuzigerawaxufigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4914/7803/files/fakepetofavazaso.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/54226672087.pdf
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/lesogumorujibakenogub.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/24761523790.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/vanabemubewazexivi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/fremennik_hard_diary.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/75588269814.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/34217521082.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/jikujojegava.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_off00006e3d.bin
0b04ddc732f15a554dbd65452506800e2cea0bd0d1ebf574ab9709452a80d018		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3D 5544 bytes
font_01_sfnt_off000080ed.bin
01ad3f0b21c013f1fec72aee4f032218eacad18b8c4a3a1181ee73ca0325fdca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80ED 11980 bytes

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