Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee1cde821033029…

MALICIOUS

PDF

56.9 KB Created: 2020-09-28 16:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d89482981a6f7c4d1a8fc787ef098d SHA-1: 8e4d5181adadda407958a94282e7d506bc1e1638 SHA-256: eee1cde821033029f0db222398542d6b98a73d1215aa0937fce4102222965bc1
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a technical document. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document is designed to lead users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest 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://cctraff.ru/mozel?keyword=analytical+methods+in+vibrations+pdf
    • http://kuzoj.kathygaulke.com/uploads/1/3/1/8/131871390/guzero.pdf
    • http://files.betterthanfreds.ca/uploads/1/3/0/8/130814235/ragukid.pdf
    • http://pivisewex.sarssm.org/uploads/1/3/1/4/131453501/5552cffe446a952.pdf
    • http://puwiliju.salomeegas.com/uploads/1/3/2/8/132815015/1d7e3faa7c.pdf
    • http://vukeleb.rocathedral.org/uploads/1/3/0/8/130874019/nobofivutekoxo-kuxola-retajofepukile.pdf
    • https://site-1037028.mozfiles.com/files/1037028/favugupirisubos.pdf
    • https://site-1036803.mozfiles.com/files/1036803/fagipudevufiluniju.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/muzoged.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/7811175273.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/limadede.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/diffrence_entre_savoir_et_connaissa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/hot_melt_adhesive_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0450/3309/5326/files/sony_cassette_walkman_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/8801/8594/files/wufojalanuwolulovasabepe.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/29196288667.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_off00009119.bin
2929b3fa0dee573412beb6ff2f05370be5f07e7d8552bc9b65f4e6bf357029f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9119 5472 bytes
font_01_sfnt_off0000a381.bin
d5a4f2b453a47ee449d93d10f936b3fe62fc750dc4d9f0511d7f9d0758db5782		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA381 10184 bytes
font_02_sfnt_off0000c662.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC662 4324 bytes

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