Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5ee98f3049a77e…

MALICIOUS

PDF

45.4 KB Created: 2020-04-18 08:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: a501b64e6fb45a1514c607fcc91a0c98 SHA-1: ac35b3c1c9c93c75d85b04dfd104909a4a26717b SHA-256: 1e5ee98f3049a77e26231f0fb3ad1338e48a46c9d566e0e237c8c9e5e6030568
104 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in SEO link farms to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading software, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://scruffrat.net/uploads/1/3/0/5/130551004/130551004.html#marathi+calligraphy+software+free++full+version PDF link annotation
    • http://verlume.com/uploads/1/3/0/8/130813846/mazegozemetiweseku.pdfIn PDF document text
    • http://battagliaresearchgroup.org/uploads/1/3/0/7/130738759/c74f42.pdfIn PDF document text
    • http://atpbodywork.com/uploads/1/3/0/6/130621963/9082625.pdfIn PDF document text
    • http://makeuphvney.com/uploads/1/3/0/5/130550848/3325885.pdfIn PDF document text
    • http://wdavidpower.com/uploads/1/3/1/3/131398164/0eedaca39.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C0 8640 bytes
SHA-256: 5d924a5e7013d80481ca86463c8c0d510e96445d16e114857f6f73b401d95671
font_01_sfnt_off000093f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F7 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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