Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bde225354e9c479…

MALICIOUS

PDF

43.6 KB Created: 2020-08-03 16:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 810e2020a6874cbc1947d859c6185fec SHA-1: 603f02e6efd85fee665d9b602b19c03363bc1104 SHA-256: 9bde225354e9c479ca26f075752f2ab35e6a6076db9e8766a7a616f3fe26eb93
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as legitimate educational content, but it redirects to a malicious URL. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking file names, suggesting a social engineering lure.

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=construct+angle+bisector+worksheet+pdf
    • http://files.inspiredemocracy.org/uploads/1/3/0/7/130739557/a13016944f877f.pdf
    • http://files.heddagrevleottesen.com/uploads/1/3/0/8/130815009/wavorajifomiti_gejonawogovo.pdf
    • http://files.cgvideoproductions.com/uploads/1/3/0/8/130814914/ac89407.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/60796552170.pdf
    • https://cdn.shopify.com/s/files/1/0428/9642/5119/files/8176084971.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/67974271332.pdf
    • https://cdn.shopify.com/s/files/1/0436/4835/2406/files/80391078995.pdf
    • https://cdn.shopify.com/s/files/1/0429/4213/6476/files/buniratigiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/20309175434.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47475247643.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdf
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/58849972391.pdf
    • https://cdn.shopify.com/s/files/1/0436/1846/7997/files/29623128097.pdf
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/20418714117.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/bemewarevelekowimonudegu.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_off000057f6.bin
ee77bad42917bcf55b708b5b39303f3fff753f8400977b844154d36e31f2ead9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F6 5620 bytes
font_01_sfnt_off00006b14.bin
2f4688557fd165c92fc912692f2321cd8ff2039442420bde1a79e757e0d3bc77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B14 9716 bytes
font_02_sfnt_off00008c6e.bin
3da9309f7c28e01a20d15285b754fad9116e6eb7744d168a0fff2950d6122081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6E 16072 bytes

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