Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac85fb0f1b874dd…

MALICIOUS

PDF

45.3 KB Created: 2020-03-31 19:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b23714f27893993c126eb6d42cbb346a SHA-1: f32d3de8f16f2178199a35ff33ede2e41d69dc35 SHA-256: 5ac85fb0f1b874dd6ff55493d3eca4ae846ffcbd7c6fe25b2ddf1b2a9a7de167
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to various domains. The document body, though heavily obfuscated, contains references to 'Romeo and Juliet act 2 review questions answer key' and embedded URLs, suggesting a lure to a malicious website. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://na-x.com/uploads/1/3/0/8/130874300/130874300.html#romeo+and+juliet+act+2+review+questions+answer+key
    • http://lunadigitalbrands.com/uploads/1/3/0/2/130270752/9988935.pdf
    • http://sellmycentralfloridahouse.com/uploads/1/3/0/5/130589316/f678fe0808ed4d.pdf
    • http://maintainurprivacy.com/uploads/1/3/0/7/130775304/todolotigiw.pdf
    • http://xrdsfaith.com/uploads/1/3/0/5/130539679/javel.pdf
    • http://beezcreations.com/uploads/1/3/0/7/130775929/57dc7a9c08c6.pdf
    • http://74-123-75-236.mgwnet.com/uploads/1/3/0/9/130969905/8167301.pdf
    • http://transatlanticsociety.com/uploads/1/3/1/4/131455543/miwarin.pdf
    • http://firebirdmassage.com/uploads/1/3/1/0/131071127/54c481b21f4.pdf
    • http://cpanel.openrangecandy.com/uploads/1/3/0/6/130603753/3841333a72.pdf
    • http://thegaragespringkings.com/uploads/1/3/0/7/130775355/vufimalu.pdf
    • http://vision3health.com/uploads/1/3/0/2/130272385/zatonifokovuvasizu.pdf
    • http://spechicago.net/uploads/1/3/0/6/130639313/75b69d2e1748.pdf
    • http://centrevitalquiropractic.com/uploads/1/3/1/4/131409884/dc81c75d45008.pdf
    • http://beaconofhopedevotions.com/uploads/1/3/0/7/130775138/d1ad04e7614d59.pdf
    • http://alisonglasgow.com/uploads/1/3/1/3/131381891/3f1bff.pdf
    • http://corporateitsupports.com/uploads/1/3/0/5/130551943/papoxabegigube_piduvarese_xogarexapoju.pdf
    • http://tradebravado.com/uploads/1/3/0/5/130588745/9700826.pdf
    • http://essentialenergeticcontact.com/uploads/1/3/0/8/130813144/ae215936c729.pdf
    • http://order.myuniquefocus.com/uploads/1/3/0/6/130604150/xuvekojosiginu.pdf
    • http://alquilerconstrutu.com/uploads/1/3/0/6/130604700/tinevaro_vitafexadoniluf_dagusomeji_xukobibez.pdf
    • http://wineandshinesertoma.com/uploads/1/3/0/6/130639521/5223017.pdf
    • http://prepaidhomedeductible.com/uploads/1/3/0/7/130775341/f1f4cb3a01a2fd6.pdf
    • http://duscha-dental.de/uploads/1/3/0/6/130620874/xiridakepugexu.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000896f.bin
18230d677eda430c1094ad601a41665443d84c975449869728f7d2a4289e4894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896F 7580 bytes

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