Malicious PDF — malware analysis report

Static analysis result for SHA-256 b298afda4140b8b8…

MALICIOUS

PDF

33.6 KB Created: 2020-08-04 04:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad3aa3639499835ead38764b2842ae7c SHA-1: 7f899ac5aa4406fd552b294b10cf2d1f0e9bd1a7 SHA-256: b298afda4140b8b82c70ed199dbc9163da66c6d36a816c5d889da28e11e8737f
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. This indicates a likely attempt to distribute malware or conduct phishing by disguising malicious links within seemingly legitimate documents. No scripts were extracted, but the PDF structure and heuristics strongly suggest a malicious redirection campaign.

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.cc/pify?keyword=altivar+31+manual+portugues+pdf
    • http://files.rickkeyesmusiccaravan.com/uploads/1/3/0/7/130740612/lexovijeve-gesogapikufuf.pdf
    • http://files.ewoutgroen.com/uploads/1/3/0/8/130814043/navofukitigo_repag_gudakuvumebusiz_gamarulux.pdf
    • http://files.mybridgefilms.com/uploads/1/3/0/7/130775295/0315f525.pdf
    • http://files.gerhardsnewsblog.com/uploads/1/3/1/3/131381464/3092151.pdf
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/back_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/carcinoma_papilar_tiroides.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/pizupamerunakesifala.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/19566154941.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/fomewadazolopemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/53285616397.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/zedomolulubidixoribodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1163/7401/files/mekaxajuzubavotusadarelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/62349521280.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufotiniponekurek.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/19066967351.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/chartjs_point_style_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/vmware_fusion_internal_error.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046c3.bin
c8a4175c527a741002ca2bff5216fa49431c09ae5be867f73351740f0f6dbf0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x46C3 5628 bytes
font_01_sfnt_off000059e0.bin
b23647bfd334912aa9a7861f91fd61250f47e92c94210b908da3472b7f344282
pdf-font-stream PDF embedded font (sfnt) at offset 0x59E0 9372 bytes