Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc41341f5f5def1…

MALICIOUS

PDF

33.6 KB Created: 2020-10-09 23:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0100f2852498dfaf17b2b905142527d SHA-1: 09e901c6bf46aea98fc81295552fd8afe96372e3 SHA-256: 0bc41341f5f5def18fe2ab0f138b23861b776da16342332f0a77de292726c72e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to malicious infrastructure, specifically a URL designed to lure users with a fake software download. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this behavior, and the document body text reinforces the lure by mentioning 'My playhome stores apk 3.5.0.23'. The presence of numerous external PDF links also suggests a link farm or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://gettraff.ru/strik?keyword=my+playhome+stores+apk+3.5.0.23
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0780/2518/files/24204531637.pdf
    • https://cdn.shopify.com/s/files/1/0483/9614/0712/files/rosunuk.pdf
    • https://cdn.shopify.com/s/files/1/0483/8729/3341/files/57335705108.pdf
    • https://cdn.shopify.com/s/files/1/0484/6095/5809/files/lewozokidorulezozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/65714975378.pdf
    • https://cdn.shopify.com/s/files/1/0479/0380/1510/files/floureon_fc200_manual.pdf
    • https://uploads.strikinglycdn.com/files/fba5afcb-9ddc-49c0-b5ee-43e2ec56c017/wusakenuxa.pdf
    • https://uploads.strikinglycdn.com/files/59f0935d-62db-401c-984f-ab1862b07713/71733037751.pdf
    • https://uploads.strikinglycdn.com/files/9670d498-9453-48eb-ad97-0f24ab902e2c/jefonifit.pdf
    • https://cdn.shopify.com/s/files/1/0484/1465/4621/files/frozen_2_full_movie_download_telegram.pdf
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/anticipation_guide_definition_literature.pdf
    • https://cdn.shopify.com/s/files/1/0484/4263/8504/files/kenda_klever_at2_kr628.pdf
    • https://cdn.shopify.com/s/files/1/0437/1287/2601/files/regomivaga.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061f0.bin
6577e03945314a03cd7a28f625d772cb48c74a468e33497ee3ddcae787f764ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 5824 bytes

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