Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9bc1075a8c84db…

MALICIOUS

PDF

41.7 KB Created: 2020-08-12 17:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01303a39db53cf8bcc88651da50f79bb SHA-1: 6b3b2633ced13a522c453c239e76900e6d4360e1 SHA-256: 1f9bc1075a8c84dbc7533c6962113f029973311adc3a035852867a61ad4c1ac2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a high density of external links, many pointing to Shopify domains, but one critical link redirects to `ttraff.com`. This redirector is known to lead to malicious infrastructure. The document body, though heavily obfuscated, contains the text 'Chaos theory textbook pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous links and the redirector strongly indicate a phishing or content-scraping attack.

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://ttraff.com/pify?keyword=chaos+theory+textbook+pdf
    • http://files.benwahrlebaseballparks.com/uploads/1/3/2/6/132680986/kijutodadoneb-rumijevumebataj-tadisulofoxibek-maxowetufom.pdf
    • http://gupigimud.glennmehrbach.com/uploads/1/3/1/4/131437402/25494.pdf
    • http://files.desertratfeatures.com/uploads/1/3/0/7/130775370/jezolake_zuvuzu_vupizumidozona_suzakew.pdf
    • http://files.lutzlearning.com/uploads/1/3/0/8/130813413/6330971.pdf
    • http://files.islandreach.org/uploads/1/3/1/8/131856134/8507946.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/lajikovemaxefenevuxikewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/29040118030.pdf
    • https://cdn.shopify.com/s/files/1/0428/7388/0739/files/aristofane_le_rane.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/46898264965.pdf
    • https://cdn.shopify.com/s/files/1/0448/4261/4945/files/clipsal_e3000_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/ranoluketajirejivazulet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/85988197667.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/read_tsv_file_python.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/24335970548.pdf
    • https://cdn.shopify.com/s/files/1/0433/7257/6922/files/lixeguluv.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/mimetanokutumovuxisurezu.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_off00004cdf.bin
41411ad9ab22d012a941a9f54430fc063c5cb22518b6b889bc8b35a9f022c266
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CDF 5128 bytes
font_01_sfnt_off00005e6a.bin
d3fb31275b6c7a5c985f39078ed8481c7113d0a50692b10634dd2400af89472f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6A 14360 bytes
font_02_sfnt_off00008bc8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC8 4324 bytes