Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef6bc4c42132c758…

MALICIOUS

PDF

41.8 KB Created: 2020-08-25 15:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05743b3ada910fa8f50d828eb680de7a SHA-1: df6b1b1f70ce70cf8b28a743caf8264be32620c0 SHA-256: ef6bc4c42132c758ddc571078433ff8d686052797f97fddf6f207cd28d90d3c3
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to a critical heuristic identifying a link to a known malicious redirector. Additionally, it contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The embedded document body text, though partially corrupted, contains a URL that matches the malicious redirector, reinforcing the attack pattern. No scripts were extracted from this sample.

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=chunariya+lele+aiha+bhojpuri+song
    • http://files.d-aleksandar.com/uploads/1/3/1/4/131411539/fotez-vowaresolu-bipaworebo-rejedo.pdf
    • http://pojerowa.oldcemetery.org/uploads/1/3/0/8/130815017/norebukibifikes_liwejajefa.pdf
    • http://files.nmctkd.com/uploads/1/3/0/8/130814397/tubabix.pdf
    • http://ginawus.carrollwallace.com/uploads/1/3/1/8/131856177/046e3c0463.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/damoxekodapulurotudepek.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/juwulegesuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/kakaruzutijexede.pdf
    • https://cdn.shopify.com/s/files/1/0435/3422/1466/files/vonut.pdf
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/losonu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4174/3263/files/18024754213.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/11187677236.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/banana_boat_sport_performance_spf_30_sds.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/in_defence_of_liberal_education.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/1/0434/6642/4470/files/banana_boat_s

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c1c.bin
870f33645187c5b0842c5b5c55e5dc01adb214ae5fd9ac6a7936327a5f23e108		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1C 5304 bytes
font_01_sfnt_off00006e22.bin
8a071ceabc95ce3ebe160ebb831aacabca0acdf564e098da9b9e8cab793e7f59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E22 13996 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.