Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6d230ee272e44a…

MALICIOUS

PDF

45.0 KB Created: 2020-09-17 12:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfb81b99a1cc197ef5087ad7826ad14a SHA-1: 388bc2d422298d65771cf66b9db6d325b859f601 SHA-256: eb6d230ee272e44a5eaa76ff6a637a6676ad6f4b311dc26328a69b55122fcf5d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though partially corrupted, contains text related to internet services and the malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary URL leads to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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.link/wix?keyword=que+servicios+me+ofrece+el+internet
    • https://afa9e661-9776-43f0-824a-0345f22e0416.filesusr.com/ugd/daca0d_c961763734274d1ca19fcd4eab58af08.pdf?index=true
    • https://791d5d79-2d47-4518-9a1b-751a726a8fbd.filesusr.com/ugd/9ef0c3_5fe87c8505e641e0a292ce4fd3ab3eb2.pdf?index=true
    • https://ebacbd38-2216-428d-8b1c-c2cf0a9627aa.filesusr.com/ugd/78daac_5d79f692f1024ebf851ac9b5028573ff.pdf?index=true
    • https://4405df22-80df-467b-ba79-b981f51a71e2.filesusr.com/ugd/1c8c1e_6916b25c7fb64d9dab9e47fb5633e950.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/4719/7594/files/familysearch_tree_templates.pdf
    • https://cdn.shopify.com/s/files/1/0468/9883/9714/files/69079541306.pdf
    • https://cdn.shopify.com/s/files/1/0435/2176/9627/files/how_to_play_factions_on_minecraft_xbox_one.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/49399507922.pdf
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/47737075361.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/49750764284.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/android_how_to_create_assets_folder.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1701/files/kindle_e_reader_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/psychology_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/zinukuxofenet.pdf
    • https://cdn.shopify.com/s/files/1/0438/0740/8290/files/oxford_english_book_for_class_2_free_download.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/
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/47737075361

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fac.bin
298142c7a8704b9e0e9d5e67e1a4b0699e082c6ab10df8121d992c097f901a9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAC 4936 bytes
font_01_sfnt_off00008073.bin
9a401c8217cf8c7dced94c58f8759fcf7f73a5c546b2a002587bdbe69a851940
pdf-font-stream PDF embedded font (sfnt) at offset 0x8073 11288 bytes