Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f71698fec75144…

MALICIOUS

PDF

46.0 KB Created: 2020-09-10 21:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01cd285296c5b5117f3bdb51c807249b SHA-1: fadac36cb30558a8344a9c737ee42e388231d1a2 SHA-256: 84f71698fec75144bb96a46ccffb9327ca335d21b242aef34467a64737b82875
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. This suggests a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of the exact payload.

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/wix?keyword=line+dance+step+sheet
    • http://files.stfrancisbing.org/uploads/1/3/2/7/132712222/d07408.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/fibuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/nonegiwij.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6781/files/biology_ecology_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/2442/2811/files/anime_school_boy.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/cerebro_masculino_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/ecology_and_palaeoecology_of_benthic_foraminifera.pdf
    • https://cdn.shopify.com/s/files/1/0465/5493/9542/files/30582278082.pdf
    • https://static.usrfiles.com/ugd/756799_31b6b8f6f0e746489094d93f09ceaef2.pdf
    • https://static.usrfiles.com/ugd/0511f5_3e73d83ec007491289b6bc4d1181abb7.pdf
    • https://static.usrfiles.com/ugd/40336e_15e126613b754feb99953080820379ff.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000596e.bin
fe7802f77482ae0ebe1319032e5f403ba8160cb721bea1811b2b8e74aa1829b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596E 5056 bytes
font_01_sfnt_off00006ac3.bin
4da722f11e6e11c900811769ae7fc3db20762ed0c830c57787fa38ad08dda751		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC3 4652 bytes
font_02_sfnt_off00007a83.bin
87743c5dfe1e1c10cc7ba9a00fe5f4505fd542ea906bb99dd42792dbba879678		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A83 10196 bytes
font_03_sfnt_off00009d46.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D46 4324 bytes

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