Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b52665bcb41c7d…

MALICIOUS

PDF

46.5 KB Created: 2020-08-12 02:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f53b9dd8ca2dc3678e7cc8aed48303 SHA-1: 8e9d52e97c65ff99e9b45df7e71722266fc3824a SHA-256: 24b52665bcb41c7db618bef102de63bd3d8078fad17b3b65daa3c26f20bf9792
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=teaching+writing+for+young+learners+pdf'. This indicates a phishing or redirection attempt. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly.

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.com/pify?keyword=teaching+writing+for+young+learners+pdf
    • http://files.andrewlawlorphotography.com/uploads/1/3/1/3/131383319/7aa18bf9.pdf
    • http://files.doggiedogshop.com/uploads/1/3/1/4/131437792/wewoz.pdf
    • http://files.gammathetaoh.org/uploads/1/3/0/7/130738748/5782802.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/c_technical_aptitude_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/hafele_lighting_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1571/files/11432107460.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9690/files/77240034432.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/nalivoduxere.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/difference_between_inflectional_and_derivational_affixes.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/bakito.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/que_es_anisocitosis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/difuxudixanadudopugup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/96852997917.pdf
    • https://cdn.shopify.com/s/files/1/0438/9086/8379/files/livro_alimentao_saudvel.pdf
    • https://cdn.shopify.com/s/files/1/0437/0703/9897/files/51216356363.pdf
    • https://cdn.shopify.com/s/files/1/0437/0379/5877/files/wotewusabatuxuta.pdf
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/59542996542.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/poesie_francaise.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_off00006a0b.bin
92efda0297d9faac3b719eff8862b5bc922203b5991953c214db2f88a9856014
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 5440 bytes
font_01_sfnt_off00007c91.bin
25e9836c2e38e9b2b6f317f7fbb623899f66a48daaae0c02603f6b3cda766243
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C91 9896 bytes
font_02_sfnt_off00009e5a.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5A 4324 bytes