Malicious PDF — malware analysis report

Static analysis result for SHA-256 1019414956461230…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 09:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ab0865dff62d615e8878873c651ad0 SHA-1: 52cf816f62aa957c289d58e0fca3733f06e2f6dc SHA-256: 1019414956461230835cd6fd73009e6d26f467bb0aa2962a084603413e0255bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to a redirector infrastructure, indicating a link farm or phishing attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=estad%25C3%25ADstica+para+administraci%25C3%25B3n+y+econom%25C3%25ADa+anderson+sweeney+williams+pdf, which is flagged as malicious. The document body, though heavily obfuscated, contains references to the book title 'Estadística para administración y economía anderson sweeney williams pdf', suggesting a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/pify?keyword=estad%25C3%25ADstica+para+administraci%25C3%25B3n+y+econom%25C3%25ADa+anderson+sweeney+williams+pdf
    • http://files.libertyhighchoir.org/uploads/1/3/2/3/132302963/salupudonesux.pdf
    • http://files.saracurto.ca/uploads/1/3/0/7/130738701/3673474.pdf
    • http://files.norwegianbuhundpuppies.com/uploads/1/3/1/6/131637553/6211075.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/79105343072.pdf
    • https://cdn.shopify.com/s/files/1/0432/6896/4505/files/bosavi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0860/5859/files/22732187073.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/1322313604.pdf
    • http://jipen.selmis-llc.square.site/uploads/1/3/2/7/132740285/gorurudekavawikojawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/60385052558.pdf
    • https://cdn.shopify.com/s/files/1/0440/8256/1176/files/54000620450.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/21313895024.pdf
    • https://cdn.shopify.com/s/files/1/0437/3908/7002/files/bukape.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/wegozosebigakudaxus.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/fabitutekusegasubigisiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/java_break_out_of_for_loop.pdf
    • https://cdn.shopify.com/s/files/1/0429/0750/0711/files/al_quran_file.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f4d.bin
ded92cdf29219af9ddb11dff036caf357891137c3074806d868d874ed4069e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4D 5640 bytes
font_01_sfnt_off0000723a.bin
f31329f5fa188752acb1f57acda26132e1fc34a504b57752ef84f09c7fafe472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x723A 11164 bytes

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