Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3d92e00c455471…

MALICIOUS

PDF

40.1 KB Created: 2020-08-26 21:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8215800c2065c4f3f5acff4954c05fc5 SHA-1: e43be9dfc02988b76f36cafe3f13f17a529a8c91 SHA-256: 9c3d92e00c4554717ad48b8e55fe3ca6d25c5137b000c6c58d2173d82d7e7ec0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary link pointing to a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme, likely intended to lead users to malicious content or phishing sites. The presence of a malicious redirector URL is a strong indicator of malicious intent.

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=atmega328+datasheet+microchip
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdf
    • http://files.thediazobserver.com/uploads/1/3/2/7/132740836/nefulet_lagakixufi.pdf
    • http://vanevow.humanesocietyofdelnorte.org/uploads/1/3/2/8/132814930/gemuvol.pdf
    • http://niwakuzo.rock-n-water.com/uploads/1/3/1/4/131438044/3036214.pdf
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/mixonavomoxaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/54510697815.pdf
    • https://cdn.shopify.com/s/files/1/0434/6209/9109/files/wordpress_login_url.pdf
    • https://cdn.shopify.com/s/files/1/0435/5656/9247/files/84804412492.pdf
    • https://cdn.shopify.com/s/files/1/0449/7162/2559/files/adjetivos_calificativos_en_ingles_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/1167/8114/files/lullaby_for_a_princess_sheet_music_piano.pdf
    • https://cdn.shopify.com/s/files/1/0465/1407/7854/files/mipidis.pdf
    • https://cdn.shopify.com/s/files/1/0435/7832/7199/files/cognitive_psychology_test_bank.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5276/files/lufop.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_off00005db9.bin
173681f5a8cddd605d0a6f08de52990f89661cb4c67f5dfa307453afe03073f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB9 5936 bytes
font_01_sfnt_off000071bb.bin
132bd8c1385abdcd5855b06cbffddeb22fefb7b4554d24ed619f16f49d7afa77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71BB 9920 bytes

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