Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c22c8e89189e8e…

MALICIOUS

PDF

44.8 KB Created: 2020-08-19 00:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e90b671cf7e19886d2c844f701f0ab4 SHA-1: 3169624770512da81d3bb291e200e242c0f35252 SHA-256: 95c22c8e89189e8e9d59b5389d80b75bdd2851a7d1b4077745c4fff9e9edaf74
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to the presence of a link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains this URL and also references a large number of other PDF files hosted on CDNs, suggesting a link farm or SEO poisoning tactic. The primary malicious indicator is the redirector URL, which is likely used to funnel users to a malicious site.

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=hanuman+bhajan+ringtone++pagalworld
    • http://files.sandraclarke.ca/uploads/1/3/1/8/131858916/3810691.pdf
    • http://files.srrlsf.com/uploads/1/3/1/3/131380868/4f04903295aa5.pdf
    • http://runure.antiagingchoices.com/uploads/1/3/1/4/131408027/6106716.pdf
    • http://rifut.swannanoavet.com/uploads/1/3/1/6/131606289/dc6568e272.pdf
    • http://files.grampiansgolfclub.com/uploads/1/3/1/3/131398145/99964b08625646c.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/gulotipivopasebatozoda.pdf
    • https://cdn.shopify.com/s/files/1/0434/3513/1036/files/civic_education_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/viruretexu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/75747781753.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9769/files/92182587330.pdf
    • https://cdn.shopify.com/s/files/1/0439/0905/4619/files/aparato_reproductor_masculino_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/16376422301.pdf
    • https://cdn.shopify.com/s/files/1/0437/5468/4565/files/art_gallery_management_system_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/3188/6998/files/66905447300.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/xarujalebenipe.pdf
    • https://cdn.shopify.com/s/files/1/0448/0322/7809/files/lumefulej.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_off000056cd.bin
426f8644c49a41440386938ab1faf6a62d629b0cdf2408360fe1a22e26395ee0
pdf-font-stream PDF embedded font (sfnt) at offset 0x56CD 5464 bytes
font_01_sfnt_off0000693b.bin
d55e417aca30bc1682140bdd4a47db47a4de187c5835eb3d4d56d50aecc47c61
pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 9772 bytes
font_02_sfnt_off00008af7.bin
ca95049057499a46d67302973335508cfd04005a66ed974dce575597a2229394
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF7 7948 bytes